I agree with above posters that Lee would be better on D if he was in his natural position at the 4. Since he can't really jump, and he focuses on rebounding (which he excels at), his main approach to D is his positioning and boxing out, controlling the boards. His hands seem to be much more active this year, and he is forcing some turnovers by smacking the ball from the bigs. He IS quick to the ball once it has bounced off the rim. His timing is impeccable. But at the 5, he is a liability on D because opposing PGs just cruise in and score. That's not really acceptable. We need to get back four or five of those drives by either blocking the shot, making the PG miss, or fouling him hard enough that he runs a bit slower on the next drive.
I also agree that David has improved his game each season and appears to be quite smart and strong. I believe he will continue to improve, perhaps even on D if he is enabled to play the PF position (at least defensively - he is always gonna be our P&R guy b/c he is great at it, and an amazing finisher with both hands). But we would need a Marion-type player who dominates on D as our C. And that guy would have to make a LOT less money than what David will fetch.
In a strange way, David has similar qualities to Oakley (only much stronger offensively): He shoots the straightaway jumper well from the TOK, he is solid with his rebounding, he sets a solid pick and moves off it with force and confidence, knowing the PG will bounce him the ball in stride.
He just lacks that Oakley tenacity on D. Perhaps he can develop it. Oak couldn't jump to save his life either, but he was one of the preeminent defenders in basketball during the 90s. No reason David couldn't emulate that part of Oak's game in the future. (Wink to Donnie: Maybe give Oak that Asst. Coach job he apparently wants).
I really like Lee, but I won't pretend that he helps us (pre-shot) on defense. He doesn't, and he won't for as long as he remains our C. The rest of his game is getting really good. The outside shot, the P&R, the pop-out 12 footer, the baseline shots, the boards, and the awesome ambidexterity. He is a great player, but