Agree college is far superior to NFL but that is in spite of the four team playoff. This is ESPN / CFP taking credit for regular season interest level. BS. Just make conference championships the single criterion for playoff appearances and you will maximize regular season interest. Thirteen dipshits determining the "four best" behind closed doors is a loser.
And has been explained 100x before, you'd also render the OOC schedule as completely meaningless. Nobody wants that. You HAVE to have at-large selections (or have a system where OOC games count toward conference standings, which is totally unworkable).