well how would you ever possibly have that, since you don't have and won't ever have similar schedules?
Conferences are eventually going to need to net out with an even number of teams and even number of divisions. Since conferences are no longer regional it would be
easier than before, but still difficult. It could be structured like an NFL schedule. Something like:
4 conferences with 16 teams. 2 divisions per conference with 8 teams each.
Each team....
Plays division opponents (7 games)
Plays 2 from other division (2 games--rotational)
Plays 1 from each other conferences (3 games--rotational)
After everything plays out, top 2 teams from each division are taken to make the field for a 16 team playoff (no conference championship). Or you could just do 8 teams and make the winners of each division play for the conference championship. In this case it just becomes part of the playoff.
This would, of course, require the FBS to cut down to 64 teams. Get rid of the scrubs. UMass? UTEP? Troy? You don't get to play for the national championship anymore. Sorry.
It would also require people to put their egos to the side and accept the fact that you are sometimes going to pull and easier schedule than other teams. Sometimes your schedule is going to be harder. That's just the nature of the rotational scheduling. Also that, sometimes, you're going to miss the playoffs even though you have a better overall record than a playoff team in another conference/division. Again, it's just the nature of how the schedules sometimes play out.
Of course this is just a pipe dream and it probably will never come to fruition. But it would eliminate the idea of committee members like Warde Manuel sitting around, stroking his chin, asking "Is the Ole Miss loss to Kentucky
really worse than the Alabama win over Georgia?" Again, this is just a way to remove inevitable biases and terrible takes by committee members when ranking teams.