I don’t think the state governments are going to let them split from Virginia Tech and NC State. When the ACC expanded in 2004, the VA governor wouldn’t let UVA vote yes on any expansion team if Tech wasn’t included. The state of North Carolina wants to keep the ACC HQ in the state. It’s about to move from Greensboro to Charlotte. Also, UNC and Duke not playing twice in basketball will upset most of the state. Unlike Oklahoma, the state government will keep them together.
My prediction: The SEC stays at 16 until Notre Dame joins the Big Ten. It will take the Big Ten teams, including USC, to say they can’t play ND in non-conference games anymore due to the difficulty of the 9 game schedule. Fox will pay all the ACC buyout fees to get ND to the Big Ten. Then they add Oregon, Washington, and Stanford. The SEC will respond by adding Florida State, Clemson, and probably Miami and Oklahoma State if UNC and UVA are stuck like I think they will be. The ACC will poach Kansas, UCF, West Virginia, Baylor, and TCU. They aren’t going to be interested in managing four time zones. They will operate as a 16 team league, and you’ll have 2 super conferences, 1 semi-super, and the remainder of old Power 5 teams will end up in G5 teams. G5 conferences will need to go to 9 conference games too because they are losing opportunities to play with Power 3? conference schedules expanding.