16 teams, first round hosted by higher seeds at home stadiums, the quarters/semis at NY6 bowls like now.
Get rid of conference championship games and use the same conference tie breakers that determine the participants to simply declare the champion that way.
Top 5 conference champions ranked in the CFP top 20 are guaranteed a spot, but are seeded based on their CFP ranking only.
All conferences of 12 teams or more that wish to take part in the CFP have to standardize to a 9 game conference schedule. Do something about Notre Dame to 'encourage' them to join a conference (like Independents have to be top 8 to get in as an idea).
"If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind." - J.S. Mill