I think the ACC GOR is weak b/c:
It can be challenged in court by a good lawyer.
We could play "home" games at MBS. If the "visiting" team or the Big Ten rented it and said it was a home game for the "visiting" team. It could even work if the "visiting" team or the Big Ten rented Grant Field from us. Lots of teams have rented Grant Field. Georgia used to, so did the Peach Bowl and the NFL.
The ACC GOR is going to be challenged and dealt with successfully by the first ACC team that gets invited to the Big Ten or the SEC.
The ACC will show how truly pathetic it is and how desirable Tech is if it goes to court to keep us. And how many other ACC teams would support trying to stop us, since they all want to able to leave the ACC if they get invited to the Big Ten or SEC, too.