Problem is that college football post season is stuck in limbo at present with this made by and for ESPN television BS four team 'playoff', morphed from the bowl system, rather than a true championship playoff of division 1A conferences. ESPN is dying under weight of bad contracts, and would love a true conference champion playoff bracket BUT Notre Dame and their 100 year NBC TV contract subsidizing independant status is the remaining obstacle to a true playoff system of conference champions. Gotta squeeze ND, but the ACC got on their knees to service the Irish Jesuit priests.
The common denominator is recruiting. As long as only a handful of schools and conferences the recruiting balance will get more and more lopsided, amd the same programs over and over will perpetuate, amd interest will decline.
In a true conference champions playoff, the field for recruiting players would be closer to level, than heavily skewed, and December college football would have opportunity to generate annual interest like March college basketball.