I have come up with my own football plan for both the SEC and the ACC. First, the SEC dumps Mizzou, because who needs them? Then we add Okie State, because for some reason, I want to preserve Bedlam. The ACC will need to add West VA. That would put both conferences at 16 teams. So we enter into a partnership, not a merge, and each team gets one permanent and one rotating opponent for a game each season. So the SEC could go to 9 conference games and 2 games against ACC opponents each season. The 12th game could be against whoever, just stop with the scheduling a lower division team. At the least, make it a G5 opponent.
A lot of rivalries get preserved this way, and the ACC benefits from riding the SEC's coattails. And it sticks it to the Big 10finity. And it gives us a bunch of good football IMO.