This trade is not at all easy to dismiss!! (except maybe from Toronto's viewpoint, as OP already mentioned).
Last year Garnett and Posey finished many games on the floor together, interspersing Perk for defense. This year Perk was even better than previous year, so it would seem strange to do a similar thing next year to we did a year ago. However, if you're talking about finishing a game with Bosh and Garnett verses Posey and Garnett (and I'm a huge Posey fan) well that's not such a terrible thing is it? So in my view Perkins and Garnett would be the starters and set the defensive tone of the game. Bosh would get big minutes (Garnett's coming off injury after all and his minutes should be decreased) and Bosh and Garnett would finish many games on the floor together, although if they were up by 10 they may finish with Perk and Garnett, depending on matchups and Bosh's defense. Wouldn't Bosh learn a great deal from Garnett about defense and also the intensity needed to win? So, I don't see Bosh and Garnett as a real problem as long as we still have Perk. It's probably Perk's minutes that would come down the most, a mid to early career break in his heavy workload, no big problem. And the other thing I like about this deal is it protects somewhat against injury. Coming off injury it is my belief that Garnett should work into big minutes very slowly. Injury and starter burnout is a very real issue for the Celtics, which is why despite agreeing with Jon's previous post for the most part, I think this trade actually DECREASES a certain amount of risk even while it represents the inherent risk of losing the starting backcourt of a championship team. In other words it both takes and gives. Perk and a Garnett-tutored Bosh would make a great future frontcourt as well, but Garnett could stick around longer and last longer via Bosh taking over as a starter in a year or two. Keep in mind Bosh would probably end up getting more minutes than Perk even with Perk starting, and that, plus the chance at a championship would probably keep him from complaining about not starting. And then against freaky teams with three bigs like Atlanta, Orlando and L.A. (if they start Odom) there could indeed be some minutes with Perk, Garnett and Bosh on the floor together, not a lot but some.
Our new backcourt would be Calderon, Barbosa, House, Giddens, and a free agent or someone via another trade, but a replacement for Pierce would be the biggest thing left to do. I'd get 2, Kleiza and Grant Hill.
Calderon, Barbosa, House
2-guard?, House, Barbosa, Giddens
Pierce, Grant Hill, Kleiza
Garnett, Bosh, Kleiza, Powe
Perk, Bosh, Rasho N.
I love watching Barbosa play. But I'm a Rondo fanatic. Hmmmm. I'm stumped on this one. Seems like one of those where the G.M. throws up his hands and says: I have no choice but to pull the trigger.