I think if that happens what will happen is teams will cut out more of the tougher non-conference games and then maybe only play 1 or 2 tough games OOC. Going to 20 conference games certainly balances out the scheduling more, but that would be a real grind. It already is at 18.
It seems like teams in general are scheduling weaker nowaways (other than MSU's idiotic schedule last year). Maybe too many teams were being left off the bubble after losing a few and they started shying away from it.
I mean I look at the conferences like the Big 12 and Big East that are supposedly good this year, and in just about every case the teams in question have maybe at most one good OOC win. All their RPI's were built by beating each other, avoiding bad losses OOC (and not scheduling many oppnents ranked 250 or below), and having fewer really crappy teams at the bottom. Penn State and Nebraska are probably just as good as those teams, but won't have the numbers to support it.