Haven't been visiting this thread as much as I should lately, but one thing I have to state:
The current metagame forces you to cope with Jace. If you can't you will lose game 1 unless you manage to keep them off four/double blue mana. Therefor: first, play a singleton Celestial Colonade maindeck. I don't care which card you cut for it. Second, run 2-4 Pithing Needle in the sideboard. YES! They are THAT good! Shutting down Jace and Sensei's Divining Top is huge as well as hitting Survival of the Fittest preemptivly is a big deal. Not to mention all the corner case scenarios like being able to stop Tormod's Crypt and Relic of Progenitus and a lot of other shenanigans like rendering Goblin's Wasteland useless against your Glacial Chasm.

Do or die.