vaan104

I love exalted double cleave is a nice card to add
this is my exalted deck
http://www.mtgvault.com/vaan104/decks/exalted-angels/

I like it but you should add the artifact land that taps for white

another good token horde card is bitterblossom its expensive but its just so good

xenagos, the reveler is another good option

sb erase to run raiders' spoils in the main. rush of battle is nasty in a warrior deck you should look at it.

nyx weaver might be good

since you are running sublime archangel maybe you should run more exalted humans also.
check through this list there is a few nice exalted humans
http://www.mtgvault.com/cards/search/?q=exalted&searchtype=text&c=w&t=Creature&ps=20

id suggest adding sheoldred, whispering one. dread return is also a sweet card for a self mill deck if you mill it you can still use its flashback. nyx weaver is great for self mill. gaea's blessing is a great card to make sure you don't deck yourself.
I run a sidisi edh here it is if you want to look.
http://www.mtgvault.com/vaan104/decks/sidisi-edh/

bitterblossom is an expensive card but it would be very nice here. urborg, tomb of yawgmoth would be good to

if you run more land ramp and multicolor dragons dragon arch is a sweet card
this is my 5 color deck that runs a lot of dragons it might give you ideas
that was my 1st deck but it has changed a lot

you could use brave the sands with stasis and it would let you use a few more dangerous creatures. brimaz, king of oreskos would be awesome here. imposing sovereign would be nice to

vorel of the hullclade would be nice and master biomancer

exquisite blood is the 5 drop enchant he was talking about that combos with sanguine bond but you can also combo it with vizkopa guildmage. a good b/w commander would be obzedat, ghost council or teysa, orzhov scion

you need to add dragon arch. cavern of souls would be good. urborg, tomb of yawgmoth and ancient ziggurat also. more tutors and mana ramp would help and skithiryx, the blight dragon should be in here. something like coat of arms or door of destinies would be nice to

its been in modern for along time

obzedat, ghost council would be nice in the main you could also run exquisite blood it makes an infinite combo with vizkopa guildmage

nykthos, shrine to nyx would be nice

desecration demon

maybe add some manlands and mesa enchantress would be nice

I like it. maybe a little card draw would help tho or some discard just to give you an advantage. Liliana of the veil might be great here but expensive