think Yogi is right that much of it has to do with his on court confidence
A guy can either play or not play. I wonder how many on this board averaged like 20+ a game. Because you can either do it or not. Confidence that is developed is never as good as confidence that is innate, period. We don't have time or resources to babify Melo. Iverson already shows as much if not more ability and a better strength level.
He is bust, he was a bust at Syracuse too. His college career was mediocre. He will be a journeyman center at best.
1) He can't rebound
2) His hands are suspect
3) He did not dominate in college
4) He did not dominate at Maine
5) He did not dominate in Summer League
6) Greg Kite was better than him
7) Marty Conlon was better than him

Crimmy - Fred Roberts was better than him
He has improved his offensive but that is where we need him to impove. He needs to improve his rebounding. I question his strength that you claim is so strong. He can't jump that high and routinely get's pushed off the block. Looking strong and being strong are two different things.
He has about 1-2 more years and if he doesn't pan out he is gone or career backup. DA usually gets rid of guys who can't play.
His hands are what he needs to concentrate as they affect all other areas of his game. Especially his rebounding. If a pass or ball don't come right out him he can't catch it.