This isn't going to be an in-depth post, because there aren't a lot of stats... it's just an idea I've had.
I think we can all agree that one of the main things Dwight struggles with on offense is larger/stronger big men. (Let's say... 280 pounds or heavier.) If he can't overpower his opponent, he often has trouble in the lane. This is true not only of talented defenders like Kendrick Perkins, but also of lesser players. (Witness his difficutlies with Aaron Gray in the Hornets game.)
I guess the question is, how often does he get to face that kind of opposition? In games, obviously -- some games. Maybe once a week, if that? And sometimes the large opponent is a backup, so they don't even play each other that frequently. We're talking maybe 20-30 minutes of game time a week. He simply doesn't log a lot of time against the guys.
On our team, we have Gortat and Foyle, two skilled defenders... but neither is an especially large/strong man for a center. So Dwight doesn't get a lot of systematic practice in breaking down 280+ lb. defenders.
But if we had a guy of that size on the team, Dwight could get as much practice as he liked. He could get that 20-30 minutes of game time every day in training camp. Even if it was a twelfth-man type of guy -- an Aaron Gray/DeSagana Diop kind of player -- this might do wonders for Dwight's moves against heavier opponents. Thoughts?