I've always liked the idea of developing conferences with two 16 team tiers, split into divisions. I think European Soccer does something like this.
For instance: The Big 10 and the Mac merge into 1 conference and steal Oklahoma, Iowa State, Kansas State, Oklahoma State, and Kansas from the Big 12 and: Tulsa (just for geography's sake) from the American West. (Only the top two performing Big 12 teams get added to tier 1 from the get go, only to fill out the 8 team west division because 11-1 votes deserve some payback.)
At the conclusion of each year, the lowest performing team from each division in the Tier 1 schools drops to Tier 2, and the Highest performing schools from each tier two division jump to tier 1. This would add so much more meaning to games that are played after a school is eliminated from the conference championship hunt.
Each tier can have its own championship game. Each team only plays the 8 other teams in it's division to qualify for the championship game (schools can fill out their remaining schedule however they want). Tier 1 conference champions are guaranteed a spot in an 8 team playoff for national champion. Tier 2 can even have its own tier two championship.
What I love about this is that is provides access for high performing small schools (UCF, TCU before the Bix 12, Boise State, for example) to the big boy table, and penalizes low performing power 5 schools for being terrible (Rutgers and Illinois).
Based on Win/Loss records from this year, the conference might look like this in 2019.
The Big 10 tier 1
East: Ohio State, Michigan, Penn State, Michigan State, Maryland, Indiana, Purdue, Buffalo
West: Northwestern, Iowa, Wisconsin, Minnesota, Nebraska, Illinois, Oklahoma, Iowa State, Northern Illinois,
The Big 10 Tier 2
East: Kent State, Akron, Ohio, Miami, Bowling Green, Toledo, Eastern Michigan, Rutgers,
West: Central Michigan, Western Michigan, Ball State, Kansas State, Oklahoma State, Tulsa, Kansas, Illinois