I think he'll pick his level up for a major, especially one that he wants so desperately. I'm also sure that he'll work on that serve. Winning a title for the first time before the Oz should have him feeling pretty confident.
Now he can go home and prepare. It's good that he didn't play as well as he can. This gives him room for improvement and it also prevented him from peaking too early. The Oz is where he needs to peak, and I hope he does.