I see what you mean. BUT
I think everyone can see that someone Like LeBron or Wemby has hall off fame/all time great potential even before the draft. The thing is can he fullfill his potential and that is more of a problem with someone like Andrew Wiggins or maybe even better gregg oden.
The potential is there they just didn't develop it well enough. That is what happens here in BB as well sometimes when people stop training.