If we do go to a playoff based on conference winners, Notre Dame has to join a conference. Otherwise, what would stop them from truly scheduling USC and eleven other cupcakes to get a perfect 12-0 or 11-1 record? Do we then add a strength of schedule component?
Basically, Notre Dame's season and national title hopes could depend on crappy team X winning in the final week, giving ND the necessary SOS to put them in the playoff.