so...... 6 teams.
5 power five conference winners. In addition, the conferences all need to get rid of their divisions. There's no need for Ohio State to play #21 Northwestern when the clear #2 team in the conference is Michigan. This would turn all of the conference title games into quarterfinal matchups.
1 at large bid for the highest ranked non power five team. Yes, there is still going to be some human element, but at least they have a path.
This would have provided some pretty good "quarterfinal" games, especially if you take the top 2 non power fives and have them play for a bid.
Washington State vs. Washington
Alabama vs. Georgia
Ohio State vs. Michigan
Oklahoma vs. Texas
Notre Dame vs. Central Florida
Hard to argue with that lineup.