All I can say is thank **** you've decided that you want to do this with the SFA... because while I like the idea, and would love to play in a system like this, I'd hate to run the RFFL like it... simply because, without 12 certified posting teams, you can't have an effective reserves comp. You'd be simming for inactives.
Pace, your idea of two admins wouldn't be effective... because it'd be a pain in the arse to create stats(in terms of each side fielding a ressies side or affiliating with another side). Premier and minor divisions won't work because, let's face it, why would you want two leagues when each only has six teams. It's a different story if you've got 16-18 teams and therefore decent sized divisions.
Plus, how would the awards function?
That said, I don't want to see the All Stars come back in either. How about every team picks one Demon and then we just ditch the rest.