I think the whole whether or not ND gets in at 11-1 discussion is very dependent upon who they are competing with for a slot. However, what will hurt ND's chances in those instances more could be a Big 12 championship game.
This year an 11-1 ND team who only lost to FSU likely doesn't get in because of Ohio State being 12-1. But had the Buckeyes lost, an 11-1 ND likely gets in over an 11-1 TCU or Baylor. However, if the Big 12 had a championship game where a rematch between Baylor and TCU decided its champion, would an 11-1 ND get in over a 12-1 Baylor or TCU?
Not sure, but regardless, ND is not going to panic just yet. They have time to see how future scenarios play out. They didn't lose their heads back in 2010 when conference realignment was at its peak, I don't see them losing their heads now after just one year's data set.
Cheers,
Neil