Honestly, it should be either 8 or 16. The teams that played in the first round had a warmup that the bye teams didn’t.
if it happens again next year they'll make it 16. simplest solution is to have relegation and a 96 team div 1 structure. 16 divisions x 6 teams. those 6 play round robin so 10 games in division. then one game with rival. no rankings nor committee ever needed.
instead of computer or committee rankings to seed, make it like the KY Derby post draw, put all 16 teams names in a hat and draw on live tv and it will bring better ratings than the bowl games themselves.
you play each team twice home and home to prove your the best. only issue is deciding tie breakers but that should be easy.
if you want to add another game for money, instead make top 2 division teams play for title and chance to go to 16 team tourney.
this completely eliminates all polls, committees, computers and any subjective reasoning to put a team in the playoffs. it's all settled on the field.
to make it even more fun and exciting, you could potentially move teams around every couple of years thus removing any biases likei vandy being stuck with ga every year or something liek that. so no sec ro big 10 or acc, maybe every two years two teams switch in and out. so every team over time could play ever other team in the country in a home and home. all tv revenue split 96 ways. bargain all as one, not as conferences. so it gets exciting to go to new places to play.
then for even more bonus fun, you take the bottom 16 teams and again using a live tv blind draw to make even more money, you match those worst 16 and the winners stay in div 1, and the 8 losers drop down to lower level. and likewise in the lower levels, top 8 teams get to move up. that would be so much fun.