I tend to agree that Bass is not a scorer. He's much more of a weakside scorer like Posey was who knocks down the open jumper.
However there are a few options we do have:
1) Marquis is a capable scorer who can create his own shot off the dribble and post up. If healthy, he can help fill the void.
2) Bradley had a reputation for filling it up coming out of college. He apparently looked bad I last night's scrimmage, but if he can blow up at the 2, we could be in good shape.
3) Wilcox is a more capable scorer than people give him credit for. And if henplays with Rondo, could get some of the fastbreak points that Green would've gotten by beating opposing bigs down the court.