RancidNaners

Oh yeah, Paragon of Open Graves works well here. It's a lord for black creatures, can give your dudes deathtouch if Death Baron isn't already and he himself is also a Skeleton.

Right? I already got one with granted in the realm of a goblin planeswalker.
Come on Wizards.

I've seen some decks like this floating around with newAnafenza coming out. I'd suggest some means of tutoring and/or card draw. Some decks use Faithless Looting, but that requires adding another colour so it's up to you.

Skellingtons are the best. You're doing the gods' work here.

I can't tell if I love or hate this deck. Regardless, you did something silly and creative so you get a +1 from me.

I wouldn't use Fire Elemental or Reckless reveler.
And I'd still advise to avoid using too many one-ofs. For constancy's sake you're going to want to pick the best of the butch and run them in sets.

No problem. If you have anymore questions just ask.

Splashing blue might be a good idea. Monastery Siege does wonders for any Soulflayer deck. Red is also an option for stuff like Faithless Looting.

The problem here is that everything is in ones and twos. You need more things in sets or 3 and 4 for consistency. Also, there's a term people use for a deck made of only commons, that term is Pauper.
If you want to play a Boros Pauper deck there's a pretty popular archetype that uses Steppe Lynx/Plated Geopede and Terramorphic Expanse and other common fetches of the like to swing in for some big damage with one dude on turn two, and typically keep him pretty big as the game goes on.

If you want to keep your deck more simplistic, I'd say take out the following cards:
Akrasan Squire, Goldmeadow Dodger, Haazda Snare Squad, Nav Squad Commandos, Thundering Giant, Hold at Bay, and Bolt of Keranos for sure. I'd also directely replace Rummaging Goblin with something along the lines of Tormenting Thoughts.
You also need manafixing. Boros Guildgate, Wind-scarred Crag, and Boros Garrison are all common dual lands that you can use.
As for cards to include, Daring Skyjek is a pretty solid creature, you might want to fit him in somewhere. Also, Lightning Bolt is a common. There's no reason to not use it. Either replace Lightning Strike as Bolt is strictly better, or run both if you feel like you need to. I could go on but I feel like all of this is a good place to start.

For aggro decks you typically want to top your curve with four drops. Aggro likes to win a lot of the time before stormbreath would be relevant. If you really like him, I guess keeping one in the deck wouldn't hurt things too much. I made monored decks last standard with him and I'd often win before I could even cast him. Which is kind of a good problem to have but he just got replaced with more burn and the deck was better for it.

I'd take out Gather Courage for Stoke the Flames. This deck is in serious need of removal, plus the Stoke can very easily be a closer. Also, that one elf dude from M15 who gets +1/+1 if you have a plains is pretty solid. Basically, if you want to be aggro you need to be more aggressive than this deck allows.
Also, as much as I love Xenagos and Stormbreath, they don't fit the archetype. I'd cut those for more aggressive creatures and more burn.