ND can just keep doing what it's doing. It has no reason to change until it's forced to.
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On that note, I was driving home today and had an idea: Miami could go independent.
The hardest part of being an independent is scheduling - just ask BYU. People want to play ND, so they don't have issues with it. And neither would Miami. Every tier of program would love a home-and-home with Miami in this 12-team playoff climate. Hell, many programs may want something bigger, like a 10-year deal with the Canes. That opportunity to play in the most fertile recruiting spot in the country is a very unique thing.
And while they won't get a deal that pays what NBC is giving ND, Miami could get something like their ACC share, I believe.
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I think it's actually feasible (outside of the G-o-R issue). I'm just focusing on the viability of the idea in practice.