I’m no fan of the current system, but you have to understand the inherent flaws in any system in which you’ve got dozens of teams competing for the same title. You’ll always have major differences in strength of schedules, strength of individual conferences, etc. that will come into play in any system — including a playoff format for a national championship.
At lest with a playoff its not arbitrary. Top two teams in a conference go to the playoffs. Simple as that
None of this crap where an undefeated team (weak schedule or not) does not even have a shot at the championship.