-Perkins could be a perfect fit off the bench just the same. He's becoming a bit more offensive minded so he could play better against lesser competition.
-That's not true, Pierce, Ray, KG, and Rondo thrive with the floor spread so there's a need there. Wether it brings better results or not is debatable. Just the same I can argue that the time when we need better defenders is in the bench, and Perkins could be the guy.
-Scal doesn't do much for the bench either because a SF shooter doesn't open up the floor as much as a PF shooter does. What the 2nd unit needs more than someone that can shoot, it's someone that can create oppotunities. Sadly, Scal isn't it. Wether Scal is in the game or not with the bench, the floor doesn't spread much with them. This is the same reason that I argue that Posey wouldn't add much to the 2nd unit as currently constructed. We'd still suffer from many of the same problems.
I'm quite certain that Scal won't start over Perkins, but we can still debate it.
I know the sample size isn't there and the competion could be considered suspect, but our defense has still been good and our offense has been very good as well with Scal in there. So it's debatable that Perk's contribution defensively outweights the possible increase in offensive production by the unit (if that's the case).