Scheduling with regard to expansion

I don't think the SEC will stop at 13, but just for the sake of argument, let's say we have 14.

How do we schedule the league? Six divisional games (3 home, 3 away) are a given, but...

2 rotating interdivisional games?

1 permanent, 1 rotating?

9 conference games w/ the same 1+2 interdivisional?

What happens when we expand to 16 (you know it's coming eventually)?

7 divisional + 1 rotating?
7 divisional + 1 permanent?
7 divisional + 1 permanent + 2 rotating?


4 divisions?
LSU - Arky - A&M - Mizzou(?)
MSU - Ole Miss - Bama - Auburn
UK - Tenn - Vandy - WVU(?)
UGA - UF - USC - FSU(?)

3 divisional, one permanent, 4 rotating?