The only player listed that would improve the roster IMHO is Rosie. His experience is much more valuable than any of the others' ability.
Assuming he is healthy and stays that way, that is.
Want someone who can step right in to the system?? Even given his age, Rosie would a no-brainer if he's 100% recovered. I think he could thrive again under BB, IF he has any desire to do so. Only a couple of years ago he was one of our top three defensive leaders.
But really he has nothing left to prove. But maybe he misses the glory days and will train like a mofo in the offseason.
Given the recent rash of injuries, BB looks to be going quantity over quality--the exact opposite of what I was hoping for in the offseason.