Ainge pulled off a great trade, moving spare parts for a solid player. It's been a pleasantly surprising off season.
As for JJJ, I don't get why going to Houston is a problem. Why don't you outwork and outplay the other power forwards on the team and earn minutes?
At the risk of getting attacked for no real reason, the rationale that JaJuan is taking is likely that the guys in front of him are mostly recent 1st Round picks by the Rockets (Patrick Patterson, Marcus Morris, Dontas Moitiejunas, Terrence Jones, Royce White).
So there is the potential that they will try to develop their own 1st Round picks even if JaJuan outplays and outworks them in camp and practice.
After all, Morey (and McHale) saw something in these guys when they were drafted. They are likely to try to develop it.
That is the possible rationale. CelticsBlog members, lend me your shields.