I just don't think you let Vucevic enter into the equation when evaluating top-tier bigs in the draft. I like Vucevic, and think he has definite 12 and 8 potential. That said, a team full of Vucevics won't win you anything. You need to surround players like Vucevic with legitimate stars if you want to compete. If you think there is a big in the draft with that potential, you take it and run. I'd rather have Vucevic backing up a 20 year old next season than have a decade of starting Vucevic next to a second role player bigman. This is a league of stars, and if you want to win--and especially win a championship--one franchise player is worth 100 Vucevics.
Edit: To reiterate, I'm not knocking the guy at all. I love Flying V and what he brings to our team. I just think that rebuilding, and more specifically rebuilding to win a championship--takes one or two (or three) very special "first option" players. Vucc has been fantastic, but I don't think he has the potential to be one of those guys.
“A house pulled down is half rebuilt” - Ancient Proverb
"There's beauty in the breakdown" - Frou Frou
"We're going to turn this team around 360 degrees" - Jason Kidd