Unless ESPN decides to "save" the ACC (renegotiate TV money), it won't matter what Notre Dame does at this point. There aren't any other "big stadium" schools the ACC could acquire that would Jump start an increase in the TV audience.
The arranged marriage of the ACC and the Big East has not produced the desired results for ESPN. The only good thing for old ACC schools has been the reunification with Virginia Tech.
At some point schools within the ACC will have to choose up sides, and move as a block to either the B1G or the SEC. I would hope that Carolina would choose to stay together with as many original conference mates as possible when making that decision. Which ever direction we choose we'll have to hold our nose.
So between the B1G and the SEC, which is more likely to invite UVa, State, Duke, Wake, Carolina, and Clemson? Realistically you would add Florida State and Virginia Tech into that grouping too (and perhaps Georgia Tech). Or looking another way, which of those cultures would those schools feel more comfortable with? (neither is not an option)
I will have to admit however, two things I don't like are cold weather and Yankees.
Let's hope that the folks running the University (who, for the most part are out of touch with the people of North Carolina) don't screw this up.
It is true that the last non-conference member Big Fan Base football program is ND, and that the ACC adding just 1 is not enough in this market to close significantly the revenue with the SEC and Big Ten. But it is true that the Big Ten seems ready to cut all ties with EAPN/ABC. If that happens, then ND will be extremely valuable to ESPN because it will require ND to have any meaningful presence in the midwest. And the midwest is almost as football obsessed as the South.
I think ESPN has been squeezing the ACC to make clear to ND that before long, coming closer every day, ND will have no other choices but to be a full member of either ACC football or BT football. The halfway deal that ND has now is not going to last much longer. And I think that if ND comes aboard, ESPN will overpay the new ACC to get it much closer to SEC and BT money - because having ND football will be worth that much to the network.
Now, as to expansion: we all not so long assumed that leagues could not expand beyond 16 without collapsing from too much size. Now, it seems like both SEC and BT are itching to have monopolies of 20 to 24 members, and my guess is each will be happy to go to 24 if both ACC and Pac can be gutted. And either would go to 24 if it got the 5 or 6 it really wants.
Who does the BT really want? ND, UVA, UNC - and if at least 2 of that trio can't be gotten, the Pac will be happy to end the Pac by taking SC, UCLA, Cal, Stanford, Oregon, Washington.
Who does the SEC really want? UNC and UVA, with FSU third in line.
What do I think UNC and UVA should do? I think they should make it clear to the BT that they would want as many ACC teams as possible to join with them. They should make Dook the first requirement. They should sell the BT on taking VT, Clemson, GT, FSU, and Miami to be able to battle the SEC for recruits and TV viewers from across the southeast. The BT now has 14, so that would be 22. That would leave a slot for ND and 1 other ACC team.
I think UNC and UVA should make clear to the SEC that they would want 8 ACC teams in the 24 team SEC. The other 6 would be Dook, VT, Clemson, FSU, Miami, and the SEC's choice between NCSU and GT.