I don't know a thing about college ball. I just wanna say, draft pick is long term thing, and team shouldn't look what their need that day. No matter what, you need to draft best player there is.
I know only Jonas Valanciunas. I know him very well. Big fan of him, but he is clearly not a first pick. He is still considering, enter the draft or quit it. I asked him about it 4 months ago, and the answer was 2012 draft. But now it looks he reconsidering it. A lot of GMs are interested in him, his coach do not trust him much, so... why not?
Thing is, it's hard to predict whats gonna happen in 6 months. I still believe he will quit.