I would say McGee, Brewster, J. Williams, B. Williams, Butler, and Hamlin all have a very high ceiling and shouldn't be judged just yet. I still have very high hopes for Hodge as well. Hopefully his knee thing isn't a lifelong issue.
Obviously it's disappointing that Mickens, Smith, Johnson didn't work out...but really, the only one we should be disappointed about is Smith. As a 5th round pick you should make the team. Mickens and Johnson were 7th rounders and really shouldn't have had any expectations attached to them at all. But early hype put Mickens on a pedestal he didn't deserve.
I'd say it's way too early to tell, and that most of the early picks are right on schedule (in that, they have three years left to prove themselves). Plus we seem to have gotten a steal in Ogletree.