IMO a single 40-60 team CFB "league" makes more sense. Just a matter if Ohio State, Bama, Texas, USC, etc. are willing to share with a bigger pool of schools. The key is if one league means more $ to TV partners.
I've talked about that many posts ago. But there's no incentive to re-org for the blue bloods in SEC and B1G, and NEGATIVE incentive for the non-blue bloods in those conferences. They already get the most $, so why change?
Only 2 ways it happens:
1. superleague rapture with the top 20ish brands, and the leftovers consolidate sensibly into a strong national league to survive (you could even call it "college football")
2. NCAA/Congress forces a total takeover and re-boot as part of an antitrust exemption
I'd say 40% on #1 and 10% on #2.