I've often wondered about a slightly different approach to this. No idea if there's any reason this would be different than a six man rotation in effect, but is there a reason not to cycle through skips in the rotation to give starters an occasional break within an otherwise normal routine? Rather than aiming for 32-34 starts for a starter that doesn't miss any time, have them start 28-30, with a skipped start once every month or two. For this team, with Hill and Pineda joining a couple months in, use ~6 starters, but cycle a skipped start in if all are healthy (and if not, go with the five that are, supplemented by Thorpe, Dobnak, etc. as needed). Berrios skipped first time through, Odorizzi second time through, etc. I think they did this with Pineda at least once or twice last year to keep him fresh, and I really hoped they would with Berrios when he struggled. Just a thought.