How the SEC reacts may play a large role. Adding a school in North Carolina (NC St)and Virginia (VT) would bring the conference to sixteen members and make their map complete. Those two schools (and their fan bases) are more culturally aligned with blue collar SEC types than their stuffy state flagship conference members (UNC, UVA).
If the SEC is willing to jump in quickly, it could make a departure far easier for schools like UNC & UVA (and also may lead the B-12 to jump in and grab what they want (FSU, Clemson), leaving the ACC in a shambles.