Not an outside threat, gets beat off the dribble, and can't drive. You've said it all. I'll add, puts himself on an island on both ends of the floor. What you have left is a high flyer who can dunk on breakaways and grab the odd rebound. 11 rebounds is great but we have an entire team that can rebound well. We wouldn't miss those. If he was a monster on the offensive glass and put back missed shots, we'd have something. Instead, we have a guy with a lot to work on and other options that fit better.
AJ's value should be as a swing player who can play effectively at the 2, 3 and 4 and even matchup as a 1 or even a 5. Athletically, he should be a stretch 4, an unstoppable 3, or an outside sniper. In short, he should be a better version of Niels Giffey. Instead, he's a not as good version of Stanley Robinson. Great highlight material but makes more mistakes than winning plays. They lead to fouls against are better players, turnovers, and botched possessions. If I could other him some advice it would be to do less, focus on defending, rebounding, and movement without the ball. Also work on his hands (catching and holding the ball). I don't think he can be a better dribbler, in season. That's an offseason project. We've had a dozen guys like AJ who play 10-12 minutes a game and been positive contributors. Playing him 20-25 is coaching malpractice right now.