We add two more FBS schools and create 14 10 team conferences that preserve rivalries but also strict geographical alignment. Each conference is tied to another conference with promotion-relegation. The top tier conference gets 2, low gets 1, 3 at large.
I think you create 7 regions of equal number teams and use the last 3-4 years to rank programs 1-20. Top 10 are in the A conf, Bottom 10 in the B conf. That’s my initial thought anyway.