The only way to do it (that won't happen) that will provide no input from committees or polls is 4 Power conferences. there are 64 teams in the Power 5 conference. Force ND to officially join a conference and take 15 others from the Group of 5. 4 conferences with 2 divisions in each. Play your 9 divisional opponents - that leaves game to schedule whoever you want. We could potentially see good match ups because it won't necessarily hurt you if you lose. It all comes down to winning the division.
The Conference Championships are the first round of the playoffs. Then 4 teams left to battle it out semi round and Championship game. This is simple and makes waay to much sense so of course will never happen.
PS. Who cares about the Heisman