2. That's just false. Bass played better off the bench, was more productive off the bench, and was better utilized. Also, his butter hands make him often a liability when playing alongside Rondo, despite the good looks he gets with his jumpers. That said, he shot better off the bench last year. Here are his splits:
http://espn.go.com/nba/player/splits/_/id/2745/brandon-bass
So, Bass being better as a starter is a complete false myth based on logical assumptions rather than reality.
Those splits don't show much difference at all. I can't get them to show per-36 splits but it looks like the numbers differ only slightly. I'm not sure that those numbers provide any proof that Bass should not start. I know that all of my arguments could be brushed aside as "logical assumptions" rather than objective statistical fact (which is a myth, btw), but I like no-pass Bass more with the starters, for several reasons.
Bass is a terrible passer. Playing him with the second unit puts the ball in his hands MUCH more than it is when he's with the starters. With the bench, he's probably the go-to guy. Having a go-to guy that can't pass really, really sucks. Playing him with the starters uses his strengths without exposing his weakness.
Now that we have Jet, Lee, and Green coming off the bench, our reserves are not desperate for offensive weapons.
Defensively, Bass and KG together were excellent by the end of the year. Sully will not be able to provide that level of defense, at least not at first.
The problem is that you're ignoring is that no-pass Bass can be a big liability at time when he's not hitting his shots, which at the same time restrains the impact of our starters. And we saw that quite a few times during the playoffs when he kept missing open shots to start the game. Which is why I prefer a low maintenance guy like Wilcox, who has shown to have great chemistry with Pierce in particular.
The way I see it Bass on the bench makes use of his strengths while limiting the impact of his weaknesses. And as you say, there's really little difference stat wise on his productivity as a starter than on the bench, so why use him with the starters when there's that potential of limiting the starter's impact on the game because of him?
I also would like to limit Bass and Rondo on the court together when possible. I really don't like his butter hands when combined with Rondo's hard passes, plenty of lost opportunities.
In a vacuum, Bass is a good choice to have with this team as a starter, but I think we have better options that work better as a unit, and I think his impact off the bench is more important than whatever he can provide as a starter.