Letting Don go was a bad move by SC&P. He has been phoning it in lately, but his talent and rep have played a huge role in the agency's success, and he's still a more essential player than any of the other partners. It does seem like it will be a good thing for Don though, and I'm excited to see how his character will develop in this new, positive direction.
I hated seeing Bob screw Pete over with Chevy. Pete doesn't have many redeeming qualities, but I still prefer him over Bob, who is insufferable.