Muktol

[[Gavony Township]] can also do the trick, but I know what you're meaning as I had the same concerns.
[[Anafenza, Kin-Tree Spirit]] could also be an option.

What about 1-2 additional Pia's Revolution and [[Myr Moonvessel]]/ [[Cathodion]] or some zero mana artifacts like [[Ornithopter]]/ [[Memnite]], [[Bone Saw]] or Tormod's Crypt
[[Myr Servitor]] could also be an option as he comes again...and again...and again.

Greetings
Muktol

Normally goblin decks tend to overrun you simply by mass, rarely by class, so countering it with a class-deck will not really be hard. You could try a Boros-style equipment deck that has some mass-removal, single sided like [[Electrickery]] of course, to counter this speed. A damage-race will normally end with you loosing; you loose a single creature, you loose the game, they loose a single creature, they only laugh and call "next one!".
An equipment deck needs a fine balance between creatures that need to be equipped, like [[Armament Master]] and [[Kitesail Apprentice]], creatures that work without, like [[Fiendslayer Paladin]] and the equipment itself. Also keep in mind that equipment-decks normally want to be as fast as possible, they don't like to sit and wait.
I would try to focus on fewer different cards but use those 4 times to ensure you draw what you need.
I guess 8 [[Kor Firewalker]] are a mistake made by MTGVault, 4 is the maximum.

Here are some suggestions that I am using in my equipment-decks:
[[Dispatch]] ... Instant removal is a rare thing for white but this card has it all: Cheap... instant... exile.
[[Kor Duelist]] ... Cheap creature that gets double-strike when equipped.
[[Ornithopter]] ... Cheap (cmc0) creature that isn't of great use on it's own but has avoidance and with the right gear it will be a good hitter.
[[Puresteel Paladin]] ... support creature that allows you to draw a card whenever an equipment enters the battlefield and lowers the equip-costs of your equipments to 0.
[[Ardent Recruit]] ... a 1/1 for 1 mana, which is just bad, but if you have 3+ artifacts on the field you get a 3/3 for 1 mana without the need to equip him anything for that
[[Auriok Sunchaser]] ... again a creature that doesn't need to be equipped to benefit from some artifacts on the field.
[[Sunspear Shikari]] ...

[[Bone Saw]] / [[Shuko]] ... equipment with the sole purpose to get a creature equipped with something really fast.
[[Short Sword]] / [[Honed Khopesh]] / [[ Leonin Scimitar]] / [[Bonesplitter]] ... cheap equipment with a good mana to power ratio. Basically you want at least 1 power for 2 mana (play {1} and equip {1} or play {2} and equip {0} and so on)
[[Cranial Plating]] ... the reason why equipment-decks can be a real pain in the ass. The equipped creature gets +1/+0 for each equipment you control!
[[Horned Helm]] / [[Vorrac Battlehorns]] / [[Cobbled Wings]] ... equipment that gives your finisher evasion of one sort or another.
[[Swiftfoot Boots]] / [[Lightning Greaves]] ... equipment that provides your creature with a most important thing: Protection from your opponents spells. Swiftfoot Boots are to be favoured over Lightning Greaves because shroud also stops you from equipping further stuff to that creature.
[[Darksteel Citadel]] ... the only modern legal artifact-land. Increases artifact-count for e.g. [[Cranial Plating]]
[[Strength of Arms]] ... instant that will give a creature +2/+2 and produce a 1/1 soldier token for just 1 mana.
[[Apostle's Blessing]] / [[Brave the Elements]] / [[Center Soul]] / [[Emerge Unscathed]] ... instants that allow ou to protect one of your creatures from your opponents spells.
[[Spare from Evil]] ... if your up against a human deck this card is useless but against each other deck it allows you to bypass your opponents whole defence.

Greetings
Muktol

+1
The only problem I see is that you have a total of 11 creatures that want to get equipped but "only" 13 eqipments -> It's unlikely that you will have enough equipment for all your creatures. I would also think about either increasing the number of [[Swiftfoot Boots]] to 4, add [[Lightning Boots]] or add [[Apostle's Blessing]] (white instant with phyrexian mana that allows you to give one creature or artifact(!) protection from a chosen colour)

Further suggestions:
[[Temur Battle Rage]] ... double strike for e.g. [[Goblin Gaveleer]] is pretty mean. [[Assault Strobe]] would be the lower-cost but only sorcery variant of this spell.
[[Infiltration Lens]] ... as (faster) replacement for [[Mask of Memory]], either your creature becomes blocked and you get 2 cards or it will deal the whole damage.
[[Cranial Plating]] ... slow but very powerful equipment
[[Etched Champion]] ... alternative to [[Kuldotha Phoenix]]. He's cheaper, thus faster, and has protection form all colours which makes him very hard to remove. Drawback is that he doesn't have any avoidance and the protection means that you can't use e.g. [[Temur Battle Rage]] on him.

Greetings
Muktol

Personally I would built this deck a little bit more control-ish that aggressive. I assumed that you don't built a budget deck and are willing to buy/ trade cards to improve your deck. So lets take a look at your card choices:
1 [[Bloodline Keeper]]... use 3-4 of him. An alternative would be [[Vampire Nocturnus]] which provides evasion to your creatures but is harder to maintain active.
2 [[Falkenrath Marauders]]... a good backup to [[Markov Blademaster]] but more expensive to play. I would use an additional copy of those to make sure you draw at least one of them.
1 [[Markov Blademaster]]... if you want to finish your opponent with this creature then use 4 copies of it.
2 [[Necropolis Regent]] and 2 [[Rakish Heir]]... The Regent is overkill in my opinion, so either use 4 copies of the Heir or use another method of strengthening your creatures (see suggestions under "strengthening")
2 [[Stromkirk Noble]]...I would use a different creature to give you some protection early on (See suggestions under "creatures")
1 [[Vampire Hexmage]]... I would sideboard this card (And increase it's number to 3 or even 4 in the SB) if you're not playing in an environment that is full of planeswalkers or other permanents that use counters. The first strike is not that important as you're using [[Stromkirk Captain]]
4 [[Bump in the Night]]... I would replace this with a removal that is more versatile (see suggestions)
1 [[Blasphemous Act]]... Mass-removal is more a thing for the sideboard. There are also options that only hit your opponents creatures (See suggestions under "removal")
4 [[Lightning Axe]]... I would use cheaper (mana) spell here.
1 [[Sorin Markov]]... I don't have good experience using a planeswalker in an aggressive deck (even if it has a high control-part).

Suggestions
"Creatures"
.) To stay alive until you can use Blademasters power you will need more removal (Also to make sure he can hit your opponent) and some defence. [[Gifted Aetherborn]] is a cheaper, non-flying version of [[Vampire Nighthawk]].
.) [[Gatekeeper of Malakir]] is a little tricky to play with {B}{B}{B} and it also depends on what deck you're up against. Mono-G that likes to put out single. large, threat? Perfect! Swarming Goblins? Not so much. So he's at least a solid sideboard choice.
.) Personally I would switch from [[Stromkirk Noble]] to [[Indulgent Aristocrat]]. The Noble is an offensive creature while the Aristocrat is a more defensive. The advantage of the Aristocrat over the Noble is that the Noble has to attack to do something while the Aristocrat can react on your opponents removal and turn a loss into a +1/+1 counter for all your creatures. [[Viscera Seer]] would allow you to at least draw some card-advantage from dying creatures.
.) If you want a creature that also supports your Blademaster take a look at [[Shadow Alley Denizen]] as he makes one of your creatures very hard to block (Switch out against red decks of course) and works like a charm with a transformed Bloodline Keeper

Strengthening
.) [[Blade of the Bloodchief]] is one of the best strengthening option in control-ish decks as it's geared towards "slow" but permanent increase in power.

Removal
.) [[Go for the Throat]]/ [[Doom Blade]]/ [[Dreadbore]]// [[Terminate]] are cheap removals that kill an enemy creature. They don't need them to be below X toughness, they simply kill them. Instead of "kill"-spells you could also use discard to make sure those threats don't touch the battlefield.
.) [[Lightning Bolt]] is a very versatile spell as it allows you to deal 3 damage to an opponent, kill a creature with power 3 or less or deliver a deathblow to a creature already "wounded" in battle. [[Magma Jet]] costs one more mana to play but gives you a little card-advantage.
.) [[Bonfire of the Damned]]/ [[Electrickery]]... simple, damage based, mass-removal that only hot's your opponents creatures.

Further suggestions
.) [[Evil Presence]]... an enchantment I'm using in my sideboard to stall my opponents game when fighting a multi-coloured deck.
.) [[Infiltration Lens]]...makes blocking creatures, especially the Blademaster, a tough choice for your opponent.
.) [[Read the Bones]]/ [[Sign in Blood]]... carddraw to make sure you get your important creatures into your hands. Sign in Blood can also be used to deal the last 2 points of damage to your opponent.

When building a deck here it would be very useful to make a proper deck- and how-to-play description. If you don't know what to put into those you can take a look at https://www.mtgvault.com/muktol/decks/why-you-should-add-description/

To me this looks more like a control/aggro deck than pure aggro tough some cardchoices are...special. I can make some suggestions (if you want those) but first I would like know how you wanted the deck to behave, why you did ad special 1-offs, and so on.

Greetings
Muktol

I didn't use [[Dovescape]] because in my opinion it makes more problems than it solves. [[Spectral Procession]] is a card that would really profit from, [[Notorious Throng]] will depend on the number of creatures (and +1/+1 enchantments) you've got on the field. The big problem comes when you opponent casts a creature that you need to get rid of else you loose (there are enough of them) and you can't use Rune Snag or Unsummon to counter this threat.
[[Battle screech]] isn't modern legal which this deck was designed for.
[[Emeria Angel]] is an option instead of [[Twilight Drover]]. Costs 1 more mana but counts for [[Pride of the Clouds]] tough when using it this deck will need some searchlands like [[Evolving Wilds]] to make it trigger more often.

[[Fate Transfer]] to instantly remove all counters from [[Thing in the Ice]]?

+1
[[Tolaria West]] can tutor your pacts.

There are some equipments with a better mana/ power ratio than the ones you're currently using:
[[Bone Saw]], [[Bonesplitter]], [[Honed Khopesh]] or [[Short Sword]]. [[Horned Helm]] could also be an option to give one of you're creatures trample.

Greetings
Muktol

3 of your 4 decks are tagged pauper but aren't pauper decks Legobis.

Here are the official rules for pauper decks (https://magic.wizards.com/en/game-info/gameplay/formats/pauper):
In this Magic Online format, all cards must have been printed at common rarity in a Magic Online set or product. Common promo cards are only legal if the card meets that qualification. If a common version of a particular card was ever released on Magic Online, any version of that card is legal in this format.
Example: [[Counterspell]] was a common card in Seventh Edition Core Set online. Counterspell was reprinted in Masters Edition II with an uncommon expansion symbol. Both versions of the card can now be used in pauper.
Other than that, the usual rules for constructed decks apply.

Personally I would remove [[Cathar's Shield]] for [[Swiftfoot Boots]] to have some sort of protection for your precious creatures. [[Flayer Husk]] could be replaced with [[Shuko]] or [[Honed Khopesh]]/ [[Short Sword]] as they are cheaper to equip. [[Cranial Plating]] could also be worth a look.

Greetings
Muktol

[[Vampire Hexmage]] won't be able to target an exiled card as it is not a permanent:
110.1. A permanent is a card or token on the battlefield. A permanent remains on the battlefield indefinitely. A card or token becomes a
permanent as it enters the battlefield and it stops being a permanent as it’s moved to another zone by an effect or rule

2 [[Viridian Emissary]] (with 2 more in the sideboard) could be an option instead of [[Rampant Growth]]. Or perhaps [[Sakura-Tribe Elder]] instead of the Emissary as he can be sacrificed any time and is of use even against less aggressive decks.

[[Force of Nature]] is not a common card in any edition. (http://gatherer.wizards.com/Pages/Card/Printings.aspx?multiverseid=3977) If you want a strong creature wich will also add 3 devotion take a look at [[Kindercatch]] or [[Brambleweft Behemoth]] for 2 devotion and Trample.
[[Utopia Sprawl]] can help to speed up play while giving an additional point of devotion and [[Nylea's Disciple]] provides you with some lifegain (at least a sideboard option)

Greetings
Muktol

Just an idea for another deck for that series: U/G enchantments.

@ Kazzong: I think you've looked into the wrong deck, I don't see any [[Dark Ritual]] here in this mono white deck ;)

+1
But technically this deck won't work with one land as all you artifacts, save [[Bonesplitter]] need 2 mana to be equipped or attached. [[Honed Khopesh]], [[Leonin Scimitar]] or [[Short Sword]] could be ways to fix that.
[[Ornithopter]], [[Bone Saw]] or [[Shuko]] are also a great cards in an equipment deck.

How to save this deck and it's idea *thinking*
How about [[Dig Through Time]] so that you, when your Maniac get's targeted, can cast this for free and draw a card and thus win the game before your opponents action resolves?

"Guaranteed turn 6 win, assuming your opponent can't kill you that fast."
...or simply shoot [[Laboratory Maniac]]. Which can be done with nearly any removal, even a simple [[Shock]] is enough.

I would replace [[Reciprocate]] with [[Tragic Slip]]. Also [[Blasting Station]] in combination with [[Solemnity]] might be worth a look.