I just don't see UNC, Duke, Wake and NCSU leaving the ACC at this time unless the GOR falls apart. NCSU might be more inclined to bolt just because they have such dislike of UNC and their belief that the ACC office favors UNC. Rivalries are one issue but we are in a different conference and still play a game with our rival, albeit just for bragging rights. The NC schools can schedule each other as OOC. With that said, I don't believe the ACC is falling apart just yet.
What would be interesting is GT, Miami, Clemson, UNC, UVA to the B1G. It stretches the footprint down the East coast into major markets. FSU and VT to SEC. Not sure where Cuse BC Duke and Wake would end up if the ACC dissolves.
The ACC still has basketball power so that alone may keep it together.
I didn't include ND because as far as I'm concerned they are not really an ACC member without FB included and they are going to do what the priesthood wants them to do independently, even though the ACC has bent over backwards to accommodate them.