A bunch of "ifs" there.
I'd just wait for CFB to fall apart. The SEC isn't even going to outlast the eventual crumble leading to an NFL style, coast to coast, football only, league of 30 teams. It will mirror the NFL.
We will be left out, which I am fine with.
I'd bet you MAY even get a team like Auburn left out. Miami. NC State......could even see Clemson left out, since UGAg and Tennessee cover the territory. It is gonna hurt. Teams will be abandoned that you might go "huh?". UCLA will have nowhere to go, USC covers the need.
In a blank slate world, you'd not have Auburn, Alabama, and FSU in an NFL style league. GT would be out because Alabama and UGAg cover our area