With the Big Ten Champion getting left out of the playoffs 3 years running now, I think I would prefer to have a 5+1 model, with the caveat along the lines of, if the lowest ranked conference champion is ranked lower than the highest ranked non-P5 team they get replaced by them.
At least until P5 and G5 are completely separate, then having an some arbitrary cut off line, maybe like "if the lowest ranked champion is ranked lower than 12th" they get replaced by an "At Large"
Oh and Notre Dame join a conference or GTFO. With ND and the ACC flirting with membership add a caveat of Who ever is ranked the highest the ACC Champ or Notre Dame gets the auto bid.
I want Conference Championships to matter for something, but also understand that not all champions are created equal, I noticed in the last rankings that UCF was one spot ahead of Washington, I'm curious if under my model they would have remained there?
My playoff Bracket this year would have been:
1) Alabama
2) Clemson
3v6) ND (At Large) vs. UCF (replacing Washington)
4v5) OU vs. OSU
Just my two cents.