I think the best players of C should go into B and the best of B go into A.
New guys arrive in C, if they are good make their way to B and A.
Novice players would stay in C until they are good enough to promote.
Lets say 3 best go up, 3 worst go down.
I tought a system like that was applied. I arrived C last year, won, and made B this season.
SNES B is going to be pretty hard to predict in playoffs, a few team could win it all.
If i make the final and win it, as i intend to, i would expect to be moved to SNES A.
If the buds in A are to much for me, ill do everything i can to stay in A until i win.
Rating people to put them at the right level is hard to do, I would prefer if competition sorted people out. More fair.
Mes deux cents...