I completely agree with 1rakete. The new Jace is exactly what this deck needs. Jace is much better than Fact or Fiction.

I also think the deck gains more from the W Splash than it loses. It makes Swords and Engineered Explosives playable and the Fetchlands make Brainstorm playable. Stifle is not so big in the Meta anymore that I would see any reason except for Budget to not play both Swords to Plowshares and Neo Jace.

With a W-Splash (8 Fecthes + 1-2 Tunrda) and a couple of new Jaces the deck is certainly no more budget, but I think it is clearly the best version.