I would love to see 18 team play-off. ACC, Big 10, SEC and Big 12 all have 2 divisions. Winner of each gets an automatic bid. No championship game needed. (conference champ can be best record). American, Conference USA, Mt West, Sunbelt and MAC all have 2 divisions, play a conference championship game for automatic bid. That has it at:
ACC- 2 auto, Big 10- 2 auto, SEC- 2 auto, Big 12- 2 auto, American, Conference USA, Mt West, Sunbelt and MAC each get 1 (5 automatics). That leaves 13 automatics and then 5 at-large bids.
Bracket would be split like NFL. seeded 1-9 in each bracket. WInner of each bracket play for championship.