Is Harrison Barnes going to play better than Josh Howard did last night? Is Perry Jones going to play better than Millsap did last night? Maybe. But there are no guarantees. I think that Jazz and most teams think that a "bird in the hand is worth more than cutting your bush" (or something like that). In a sense, Millsap and Jefferson are still developing as players, and it's worth letting this happen too. Their improvement could mean as much to the Jazz as a bright young rookie. Lets say the Jazz trade Millsap or Josh Howard and get a good player back who is ready now. This is something else to consider.
Lets say the Jazz get pick #4 in this draft. They'd probably take Barnes or Gilchrist, maybe PJIII or Thomas Robinson. Actually Jeremy Lamb or Brad Beal might be the guy they should take. Do you play Gilchrist ahead of Hayward who helps steer the offense? Do you play Lamb ahead of Burks, who probably passes and slashes better? Probably the solution is that you pick either an SF or an SG and have Hayward start at either position alongside that player. However, a good player will probably be there when the Jazz pick with the GSW pick.....assuming that works out. There are some unknowns, but is it really worth tanking the season right when the team is trying to build an identity and rebuild another winning tradition?