How about this idea: the ACC adds ND only and rotates them every year

[Old Line Hokie]

Cons:
-Special treatment. ND could qualify for the ACCCG while playing fewer conference games than everyone else.
-Cross-divisional teams would go up to 10 years without playing each other. Imagine Wake and UNC playing each other only twice every 12 years.

Having Notre Dame isn't worth those 2 cons. The possibility of going 10 years without seeing teams from the other division? ECU would feel more like a football conference member than Clemson or Florida State based on the number of times we meet over a 10 year period. Notre Dame playing fewer conference games so they can selfishly put their own special interests above the conference's. The cons would end up weakening the ACC. I can see other schools demanding the same special treatment that Notre Dame is receiving. if not, those schools will threaten to leave and create instability within the ACC or worse, just leave the conference. Notre Dame has to join the ACC as a full member with no special treatment. That's why they'll likely never join. Their ego is too big for any conference.