We all know he's a good defensive player and rebounder. However, he is a good defensive player simply because he can block shots because he's big, tall, and can jump high -- and for the same reasons, he is a good rebounder. Having all those physical attributes can only get you so far though.
Other than that he seems soft as a player, and lacks the coordination and touch to be a good offensive player.
I think he can improve over time and is a good player now, don't get me wrong, but he definitely doesn't look like a natural basketball player out there.
Let's just say I don't think he's the X-Factor for the Magic.