Of course there is some chance he improves on last year. IMO, it's very low and even that much lower that he can put up an .870 OPS. Thats nearly 50 points higher than last year where it's pretty clear to anyone with eyes that he came close to maxing his potential. He's never going to put up a high OBP. .350 OBP seems out of the question . If he is going to improve it's going to come in the SLG department. He's a rather empty power guy in that he hits a lot of HRs but not many other XBHs. I don't see any reason to think that changes. Even if he is a 40 HR guy he's not going to give you more than 20-25 doubles. He's come close to maxing his potential. If he ever puts up an .870 OPS, hell an .850 OPS, over a full season I'll buy you any seats in OPACY you want . There is a better chance he isn't a fulltime player come the end of 2013 than there is he puts up an .870 OPS.
Sound thoughts. His swing plane is what limits his "other" extra base hits. Not sure I see where growth is supposed to come from -- if anything, he's likely to be a player whose stats are very much affected by which pitches he happens to run into. If he gets more with which he can match planes, he'll hit some bombs. If pitchers don't give him those pitches, and he isn't able to work counts to them, he'll likely struggle.