I predict the SEC/B1G push for a 3+3+3+3 model. 3 auto bids each for the top 3 B1G and SEC teams. 3 auto bids for the next 3 top rated conf champions, typically Big12, ACC, and a G5. And then 3 at-large bids for the next 3 highest ranked that don't fit one of those first 3 (could be another SEC/B1G, ND, Big12, ACC, G5 whoever).
That model gives a floor of at least 3 spots to the P2 conferences, with upside to get 4 or even 5 in the playoff in a hot year. It retains access for the Big12, ACC and G5 to get at least 1 and possibly more, and ND can still enter if they're top 12. They'll also do a rev split model like the NCAA MBB tournament where the most money goes to the most bids and who goes the furthest into the playoff. Bottom line, most years the B1G and SEC will walk away with 70% of the revenue from the playoff.
Does anyone know on the NCAA MBB tournament how the rev split works today exactly? If Texas makes the final 4 they make more than if they get to the sweet 16 but do they keep all of it or is there a % to the conference? I assume the conference takes some and the school takes some?