This is the best solution. Eight conferences, 9 teams each. Adds 7 more teams (and ND), for sure nobody left out. Eight conference games, 4 home and 4 away, and 4 OOC. Eight team playoffs custom made for a tournament. ESPN goes out of business, nothing to talk about.
I think it's far more likely we'll see the 5 power conferences combine into 4 16 team conferences (at the expense of the Big 12) before we see them break up into 8 smaller conferences.
That still works though. You could even do conference 4-team tournaments at the end of the season to crown the 4 conference champs for a virtual 16 team playoff. How can a conference make even more TV money? Finish the season with 2 semi-final games and a championship game of their own.
Scheduling could even be perfect too. 9 conference games. 3 from your own 4 team division, 6 from 2 each of the other 3 divisions. Then 3 non-conference games against 1 team each from the other 3 conferences.
As a player with 4 years, you'd get a home and away with every team in your conference. As a fan, you'd see your team play every other team in a power conference home and away over 32 years. The other teams that aren't in that 64 team setup just have their own second tier division from now on, which means they probably axe football without getting money games against the top 64.