I'd personally be very willing to state that Jace is currently tied as the best walker in standard, next to big Garruk. Unfortunately, he's criminally underplayed.
Lets just lay it out one way: Turn 2 Syncopate/Augur of Bolas; Turn 3 removal; Turn 4 Jace -2/+1 depending on the matchup.
Decks just can't beat that kind of card advantage. Sure, the game doesn't just end there, but that turn 4 Jace on a near-empty board or just empty board will decide the game a significant amount of the time, and the played casting Jace will be ahead for the rest of the game.
So yeah, discuss the sheer brilliance.