If Grant is going to have any sort of NBA career, he needs to develop ballhandling skills and at least a midrange jumper, or he needs to bulk up a lot to play power forward. The comparison to Hakim is reasonable, and the lack of those two skills kept him from making a bigger NBA impact. But he definitely not Darius Miles. He sucked, yet he was somehow able to parlay the ability to dunk and block shots (yes, I know, staggering skills for a 6'9" guy) into an NBA career where he made $60M+. A friend and I saw him at the McD's AA game in Boston just before he was drafted, and the writeup was he was athletic, could run/dunk/block shots. Awesome, but at 6'9", you should be able to do that. If money is the object, then yes, Grant could likely go pro, and make a great fiscal career (relative to 99.99% of people) right now, without improving anything, although the NBA is not paying the same as it did for Miles, but that is not an impact player. Hakim made $21M+, but you'd never say he was an impact player.
Jerami can be an impact player if he adds those skills. I hope he does, and I hope he'd add them at SU, but if some team says "here's $12M to develop over the next four years", that'd be tough to turn down. FYI, MCW got a 4yr $10M deal or so.
Kev