Other than missing on Gasol the year we took Gabe Pruitt (hated that pick from second 1), I think Danny has done a pretty great job as GM.
We love to pick nits with Danny, but gimme a break, the prior 15 years of management were utterly atrocious. Get over it. Danny has created a great environment that players love. Doc is not perfect either, but guys love to play for him and he's able to get guys to buy in.
Sully's back will be okay, and Fabulous Melo will be serviceable within 3 years. Neither will be a superstar, but neither will anyone else drafted behind them. Other GMs whiff all the time in the lottery, and Ainge usually hits with his late 1st and early 2nd round picks.