I see Warrick, ideally, as being one of two things:
1. a starting forward on a fast-breaking team like NJ or Phoenix that cranks up the pace, and allows him to thrive in that environment. I think NJ would be nuts to pass on him if he's there at 15.
2. a sixth man for another team that brings him off the bench to change the tempo and put some energy into the game.
If Warrick isn't the best 6'8 athlete in this draft, he's sure close to it. Explosive hops, good defense (though he'll need to adjust to playing man to man), good work ethic. He would be absolutely DEADLY on an open-court team.
I will not, however, deny that his jumper is weak. I watched Warrick for four years. He doesn't have a jumper, and at this point, I don't think a few weeks working with Tim Grover (or whoever he's training with) is going to change that. He expanded his range a little during his senior year, to the point that he has a semi-reliable 15 foot jump shot. That's about it. Realistically, his scoring is mostly going to be limited to dunks and putting back offensive rebounds. But he can be a very successful player with that sort of game on a number of teams. That's why I don't think he'll be a bust.
But if he went to a walk-it-up, half court team like Detroit, he'd have a lot of problems.