Agree. IMO ND never had thoughts of joining the BE for FB. They used the BE as a spot to park non FB sports and planned to eventually go to the B1G if necessary. Since then, the ACC has added BC, Pitt, and SU and all of a sudden offers ND another option. I believe that ND prefers the ACC vs the B1G if/when they are forced to choose. ND is an Eastern school and private school that fits the ACC mold. However it might be hard for ND to sell the ACC to their fanbase and boosters. So the best way to ease that transition is to play in the ACC for all sports but FB. After say 5-10 years the ND fans will be familiar with ACC sports and have a connection to the ACC. They won't want to give that up to play Mich St and Purdue every year in FB.
IMO having ND as an all but FB member is the best way to get ND into the ACC. Since the ACC doesn't NEED ND like the BE did, they could cut ties if ND becomes a PIA. No loss in trying.
The scenario stinks but as pointed out above, it would keep Rutgers out of the B1G and both Rutgers and UConn out of the ACC. Throw in some penalty money and then maybe. $20M if Notre Dame joins another league within 10 years. $10M if they park non-revenue sports and don't join the ACC for FB within 5 years ... or something like that.