I would add black for Nephalia Drownyard because that with jace would be pretty good

 i'm wondering a few things...do you have any trouble getting slowed down by the guidlgates?  also, are you running only 1 snapcaster for a reason or is it just what you're budgeted for?  i like the list, don't take any of this as negative criticism.

capriom85 to answer your questions the guildgates I find to be necessary for consistently getting the right combination of colored mana, in my testing I found 3 copies to be good enough for this effect without causing a noticeable slow down in the game, though I don't know if slowed down would be the right term for this deck as it isn't fast by nature.

As for the only snapcaster that is deliberate (I do own a play set) as the deck has almost no use for the body and it's usually used as an extra counterspell, an extra Revelation, and those rare games that I'm losing to another mill strategy and I need to flashback a Psychic Spiral .

For the deck overall I will admit that it's starting to feel a little stale, even though there hasn't been a tournament that I've attended with it yet I didn't walk away with some of the prize pool. The control game can be boring and I hope to find room for some of the gatecrash.