Eff it, let's go big as long as we are going down this route. Add Stanford, Cal, Oregon, and Washington. Angle for a future absorption of ND, Duke, UNC, and FSU.
4 divisions of 6 teams each.
Pacific: USC, UCLA, UW, OU, Cal, and Stanford.
Plains: Nebraska, Iowa, MN, WI, Ill, ND (sorry NW, we need a blue blood here, and you get penalized for being a fancy-pants private school)
Lakes: OSU, Mich, MSU, Purdue, Indiana, NW (geographically could probably switch WI for Indiana, but hurts the power balance)
Atlantic: Rutgers, Maryland, UNC, Duke, FSU, PSU
10 game conference schedule. Five within division, and then some sort of a random rotation for 3 or 4 games. I liked the devised matchups they used at the end of 2020, something like that could occupy the last 1 or 2 weeks, followed by some form of conference championship (depends on what CFP looks like).