I just read where UNC plays a non-conference game at Wake this season, and will play them again at home in 2021...another non-conference game.
Seems to me this is the way to eliminate the permanent East / West opponents. Bama & UT...want to play each other every year??? Schedule a non-conference game. Same for Auburn and UGA. Would make life better for everyone in the SEC.
Opens up new problems. What happens if Alabama and Auburn both win their division? That game between them didn't count?
Yes, you already have the same problem for when rotational teams might meet during the season or by miracle games like Tennessee and Alabama get replayed again.
The simple problem is Alabama wants to hold on to it's yearly games with both Auburn and Tennessee. Until you get around that fact, there's really not a good alternative.
What's most likely going to happen is that they actually divide everyone up into 4 'divisions' similiar to basketball.
Each team gets 2-3 dedicated yearly games with SEC members and then all other games are rotational.
Example;
South Carolina - Florida/Georgia/Missouri
Tennessee - Alabama/Florida/Vanderbilt
Florida - Georgia/South Carolina/Tennessee
Georgia - Auburn/Florida/South Carolina
Auburn - Alabama/Georgia/Ole Miss
Alabama - Tennessee/Auburn/LSU
Ole Miss - Vanderbilt/Auburn/MSU