I'll take a shot at the opening day staff next season. 12 is the most likely number.
Starting Rotation: Sale, Quintana, Noesi, Danks, Carroll or filler
Bullpen: Petricka, Webb, Guerra, Surkamp, Leesman, Rienzo, Putnam and possibly an offseason addition or two. A couple of these guys could be in AAA if free agents are signed.
I also doubt Rodon will be on the team to start the season. Just don't see them rushing him up like they did with Sale. Signed late and I think he's going to need more time in the minors. He will be called up at some point during the season but I doubt straight out of camp.