I dont really see the ACC all of the sudden saying hey, you can no longer play your 6 teams a year.
The formula stays the same, play 1 top 10 team and 1 top 25 team, go undefeated and your in.
Just like Cinci. Just like Clemson. Just like OK.
At some point in time, yea, we might be forced in but that is some time down the road when ND will have a better look at what Conference makes sense. IMHO, the ACC is still the best conf for them. You have academics, recruiting and a network. They could also go grab Vandy, Northwester and Stanford and actually have a conference that has standards. Maybe Rutgers is a better fit as well.