Somehow I doubt that going ultra-big is going to help this team rebound.
Best possible starting lineup I think would be Rondo, Lee, Green, Wallace, and Humphries.
Which still isn't a great starting lineup, but to my mind it provides the best mix of spacing, transition game, offensive BBIQ, and individual defense (outside the Center position, but that's going to be a problem no matter who you put in there). Operating on the assumption that Rondo is still going to have the ball in his hands for the start of most of our offensive sets.
-Sullinger's our best rebounder but I don't think he's nearly as potent a post presence as he is represented on here, and seems to have a hard time finishing against first string players.
-Olynyk's a defensive liability right now.
-As is Crawford, who's got enough playmaking ability to be the backup point/microwave anyway.
-Pressey's played well, but no way he's starting over a healthy Rondo.
-Bradley has also played well, but IMO he's been exposed defensively by larger SG's, so unless we're playing a team like Miami and he's hounding a Wade, I'll take him coming off the bench. You could talk me in to starting him over Lee relatively easily, though.
-Bass is a known quantity.
Advantages to the bench: Playing Olynyk and Sullinger off the bench against other bench players allows them to take advantage of their superior passing (and, fingers crossed, the ability for a solid inside-out game at the 4/5). There aren't many great big men coming off the bench in the East, so the fact that they're undersized shouldn't be a huge detriment.
Bradley's one elite skill smothering second-string point guards on defense.