Before the Pac-10/16 stuff started, there was a theory among many writers and bloggers that Notre Dame was the key to expansion. Now, this has been ebbing and flowing for months. At times there were theories that the Big 11 expansion was as much an elaborate ploy to finally force the Irish into the Big Something.
In recent weeks, the theory went that if the Irish were sufficiently concerned about the changing landscape of college athletics, they would not want to be left behind and thus would join the Big 11/12/14/16. The Big Whatever would stop at 12 without any further expansion.
They would have no need because they got one of the big prizes and no other expansion candidate could deliver the return anywhere close to what ND offered. Then all would be settled down, and most of the conferences would remain unchanged. That theory is still out there. If anything, it seems to be picking up steam once more. Even if nothing is happening.