You forgot about the bowl games, which are independent entities, but have conference affiliations. Those bowl games have contracts with the conferences that expire at different times and they aren't going to change them. You've also eliminated the marquee OOC match ups that people like to see because since schools have to play 10 teams in the conference, they will most certainly schedule a patsy as their only option. The lower 48 teams will most likely need to drop their football programs because they will no longer get the big paydays for scheduling 2-3 power teams.