Interesting subquestion:
Would you trade Kendrick Perkins for Ray Allen?
Good question. Back then Perkins had absolutely no value.
His value was earned when we lost game 7 and he immediately became the Celtics best player and key to winning a title.
Gun point, you know exactly what Kenrick Perkins becomes - and you can only take one player going forward in 2008, would you select Perkins or Ray-Ray?
All day everyday! Can't Start a franchise with Perkins. Milwaukee & Seattle did with Ray.
In this scenario the rest of the cast would stay (relatively) the same as it did. I think I'd take Perkins.
Ray Allen without second thought, you always win when getting the best player in the deal.
That would be like the Kwame Brown trade, Lakers got a star player in Gasol, and gave up one of the worst players in the league with Brown.