I personally don’t think you’ll see a true super league, ironically I think we’ll see the 12 team playoff as a turning point going back to the old bowl system (hear me out).
SEC and Big Ten see the bulk of the 12 team playoff selections and the other games against the B12/ACC/G5 are mostly non competitive (Cincy) or they win the first round and fail the second round (TCU/UGA) which damages the product overall. At the same time more pressure will be placed on CCGs and especially the loser (or winner if they go to 16).
The best solution would be to bring the majority of the playoffs in house. CCG weekend becomes round one of a 4 team conference playoff. The 1&2 seed host home games, then round two on NYD becomes the new CCG (SEC at Atlanta, Big Ten in the Rose which solves 2 major issues for them). Then two weeks later the winners of these games play against each other in a BigTen/SEC challenge (not an official national championship, but it is defacto).
After this we go back to the old bowl/poll system. The round 1 playoff losers can play in the bowls versus Big 12/ACC/G5 teams just like they always have. They can still do a NY6 type bowl arrangement and have contractual bowl games so this avoids many of the pitfalls of antitrust because it’s just going back to a previous system.
SEC and Big Ten keep what they kill. Early OOC games and bowl games can still be played. I think this is a more likely future especially since it came out that the networks considered the first round playoff games to less than desirable. The expansion to 12 was to satisfy the B12/ACC/G5/ND but if the Big Ten/SEC can do their own thing and each get 4 spots where their games are more valued, this seems like the most obvious solution especially if they add in ND/FSU/Clemson and a few others into the mix.