With 14 schools in the conference I thought it needed 8 votes to dissolve? I would say UVA and Georgia Tech are strong possibilities and would be coveted by one of those conferences. If 7, that's it, if 8 there would need to be one more that is assured an invite.
However, do they all need B1G or SEC invites? Their payouts are like $17m/year from ESPN right now. Yeah the top programs probably have standing invites to the P2, but what if Pitt and Louisville, for example, get an offer from the Big 12? It would align Pitt with WVU and add another great MBB program and give the ACC enough votes to dissolve.
Of course, this kind of scenario would essentially be the Big 12, B1G and SEC making the decision to all go to like 20 teams each and reshaping the landscape into a P3 setup.