Just expand already.
One possibility would be for the Big 12 to guarantee that any championship game with just 10 teams would match its No. 1 and 2 seeded teams.
The Big 12 will probably have support from the ACC, but the Big 10 is standing firmly against them.
The vote consists of FBS members on the NCAA Council with a weighted structure. Votes for the five Power Five conferences count two each, compared to one vote each for the other five FBS conferences. Majority support is needed for a proposal to pass.