You guys are dressing it up a bit much. Most rosters aren't going to be real deep when the top 3 guys are a world class superstar and 2 all stars. If you take one of those guys out, it's tough sledding, particularly when he's the best shooter you've got. You'll beat the Bulls, but it's going to get tough against that upper echelon, which is certainly what that Boston team is.
Middleton is a bit of a rollercoaster but he'd have been good for at least two 30 point games. When they get it to 85-81 in game 6, you can count on him to hit some shots.
I just have a hard time wrapping my head around firing the coach and the roster construction when we played the entire series without an all star. It's asking a ton to beat the Celtics without him...and they almost did it. The Ibaka trade is definitely a fair criticism but the unfortunate injury is what doomed the Bucks.
The NBA playoffs are a grueling slate. You have to get lucky. We got really unlucky, with the injury, and then the ensemble cast just completely unable to hit a shot down the stretch. They'll be ok, but definitely some retooling to do.