2x-Captain of the Watch - Better as Odric, Master Tactician. You don't run NEARLY enough Soldiers to make her effective, even with Captain's call.
1x-Herald of War - Looking at it, you don't run NEARLY enough Angels or Humans to make this work.
1x-Warclamp Mastiff - Terrible card. Don't run it. Play a real card.
1x-Angelic Wall - Stop it.
1x-Aven Squire - Play more of these if you want the Exalted trigger.
2x-Bloodflow Connoisseurs - Fine as a sacrifice-outlet, but cards that do things would work better. Look into Bone Splinters, Launch Party, and/or Altar's Reap
1x-Nefarox, Overlord of Grixis -Good as a one-of, but don't rely on it too much.
1x-Xathrid Gorgon - this is fine secret tech as a 1-of.
2x-Harverster of Souls - relying on non-token creatures to die seems less good when you only have 18 real creatures in your deck. You should play Desecration Demon instead
1x-Duskmantle Prowler - as one? Why? Play better Exalted cards instead.
1x-Bloodline Keeper/Lord of Linage - You don't run enough Vampires. He'll just durdle and get killed.
1x-Mikaeus, the Unhallowed - This is fine. But the triple Black casting cost will be tough to handle.
1x-Mind Rot - Fine, I guess. But with Loxodon Smiter in the format this is a risky card.
2x Captain's Call - Why? A couple of 1/1s doesn't make the same impact.
3x-Safe Passage - Play Faith's Shield instead. You don't want to be on the defensive, and this card is terrible.
1x-Banishing Stroke - Fine as a 1-of
2x-Murder - Fine, but the 1BB cost is difficult to cast. Try Utimate Price instead. It hits all monocolored creatures, which are still some of the biggest threats in the format.
2x-Oblivion Ring - Good
2x-Angelic Benediction - meh. You'd rather be playing Sublime Archangel instead.
2x-Pacifism - Good. Arrest is also an option if the creature has activated abilities.
1x-Exquisite Blood - Really? I think you'd rather play a better card at 5 cmc.
1x-Sorin, Lord of Innistrad - More of him will help. His Emblem ability (-2) is amazing and really helps with your exalted theme.
1x-Liliana of the Dark Realms - Works well to keep the Black Mana up.
1x-Moonsilver Spear - Terrible. WAY too slow.
1x-Barter in Blood
1x-Deathrite Shaman - DON'T PLAY HIM WITHOUT GREEN! Or you're severely limiting what you can do.
1x-Mark of the Vampire -
1x-Vampire Nighthawk - Play at least 3 of these mainboard.
1x-Crusader of Odric