I figure this can be a great improvement, logically speaking. However...
Imagine I train Cs, one position. My PF gets in foul trouble, so the coach decides it's a great idea to shift over my C to the PF position. The result? My C gets 20 minutes as a PF and 10 as C (roughly speaking, the numbers are the first that came to mind).
Sounds like an amazing way to make an already volatile system even more unpredictable...
so why did you put your C as PF rotation if you didn't want him to play there?