Have to wait a lot longer than that. Players develop in such strange ways.
It will never happen, but I would love to hear the debate that goes on behind closed doors. On the way home, I was listening to MLB and the two guys were debating players, Fulmer in this case. One liked him a lot and felt he was the top collegiate arm, while the other felt he was a bullpen arm and a team shouldn't go for a pen arm in round one. I assume this type of debate is the norm within all organizations. A tough business.
And just think how hard it is to actually predict these guys, even once they make it to MLB. Take Springer for example, I bet, even after a full year and at age 24 or 25, opinions are still quite divergent. Or McCullers, would he have been a top ten pick if he was in the draft last year? Maybe, maybe not. But this year, he might well have been 1-1. The draft seems to have numerous college players who were thought only to be late round quality coming out of high school, but are now first round picks.
Anyways, a long winded way of pointing out the obvious: it's way too early to say anything but "let's hope they stay healthy and succeed."