I just read today that the SEC is considering doing away with its divisions and one of the proposed scheduling models is to give each team 3 permanent rivals and the other 10 teams rotate through so that everyone plays each other home and away over 4 years, with the top 2 teams playing for the conference championship, much like the Big 12 does and the AAC will next year when Connecticut is out.
That could work for the BigTen, though the risk of rematches - particularly for rivalries (especially if it's Michigan - Ohio State, of course) concerns me as would've happened in 2006 and 2018, though I'd much rather play the BigTen West teams more often than Maryland and Rutgers, of course.
The ACC could do that as well, but they'd probably be better off just realigning their divisions to be more geographic and maintain more rivalries (Virginia, Virginia Tech, North Carolina, NC State, Wake Forest, Duke, Clemson / Pittsburgh, Syracuse, Boston College, Georgia Tech, Florida State, Miami FL, Louisville)
CUSA is also a 14 team league that could adopt the same model, but they don't have any split rivalries as it is, so they'll probably just keep it as is. Same with the MWC at 12 teams. I don't even understand why the Sun Belt has divisions with just 10 teams. And the MAC should probably just swap Toledo and Buffalo to keep all of the Ohio teams together.