Also, I don't think this hypothetical is all that far fetched. And, we wouldn't be invited alone. We'd either be paired with ND, or it would b a package deal of us and Georgetown.
At the of the day Id probably stay put, but it would definitely deserve consideration. Plus, consider this - how 'foreign' to us would a conference that includes Syracuse, Boston College, Pitt, Notre Dame, Louisville, and potentially Georgetown be?