this makes more sense, imo.
While it is a pipe dream.
The way I would set it up would be like this:
2 conferences east and west with 5 divisions each made up of 6 regional teams. 60 teams total.
Each division would have a feeder conference that sends its best 6 teams into championship play.
This is the deal breaker for this type of scenario because the conferences as currently established would have to be disbanded and redefined.
Regardless for fun say this happens and we have conferences composed of 18 teams with only 6 competing in the championship format at any given time. With 10 divisions that gives you a pool of roughly 180 potential CFB Championship teams where only 60 of them are eligible in any particular season.
Each season you will have 5 games in division and play 6 crossover games with one of the other divisions for a total of 11 games. Only one region in each conference would play the other conference each season so that some regional rivalries can remain intact if certain teams end up in different regions. At season's end the division winners will face off in a 10 team playoff with two top seeds receiving byes. You would also have the team in each region with the worst overall record face off with a non qualifier team outside of the 6 in their feeder conference to keep their spot in the championship region. Any major rivalry that teams want to play outside of the playoff structure would be played to open the season and not count as part of the championship structure for a total of 12 games plus post season.
Divisions could look like this...
South East: Miami, UF, FSU, GT, UGA, Tennessee
Tobacco Road: UNC, NC ST, UVA, VT, Clemson, South Carolina
Delta: LSU, Missippi, Miss St, Arkansas, Alabama, Auburn
North East: Maryland, Penn St, Pitt, Boston College, Syracuse, WVU
Mid West: Ohio St, Michigan, Michigan St, Cincinnati, Kentucky, Louisville
Texas: Texas, Texas A&M, Texas Tech, Houston, TCU, Baylor
Plains: Oklahoma, Oklahoma St, Kansas, Kansas St, Iowa, Nebraska
Great Lakes: Minnesota, Wisconsin, Illinois, Notre Dame, Indiana, Purdue
Rocky Mountain: Colorado, Boise St, Arizona, Arizona St, Utah, BYU
Pacific: Washington, Washington St, Oregon, Oregon St, UCLA, USC
So at seasons end you could see a playoff like
Bama bye
Ohio St bye
Miami v BYU
Washington vs Texas
Notre Dame vs Penn St
Clemson vs Oklahoma
You could also see a do or die series of games like
GT vs UCF
NC ST vs Wake
Miss St vs Arky St
Cincinnati vs Toledo
Houston vs SMU
Maryland vs Buffalo
Kansas vs Missouri
Indiana vs Northwestern
Boise St vs Utah St
Oregon St vs Cal
For arguments sake what about these weaker divisions? How do they earn a spot and why. Well they play a crossover as well. In order for a division to keep its playoff spot the division winner must have a better overall record or head to head win against the second place team from their crossover division opponent. That way there is a little check and balance. If a division winner lost to the second place team and has a worse overall record they lose the spot to them. Two weak divisions will draw each other often but they will be seeded low and have to survive and advance through three very deserving teams.
This is my dream scenario for CFB realignment