Pretty much every possible complaint about this format can be solved by getting rid of the pointless conference championship games, which in case anyone needed a refresher were invented pretty much from nowhere by SEC commissioner Roy Kramer 30-odd years ago to make TV money. There was never a competitive reason for them to exist.
Getting rid of them enables the calendar to move up so the first round of the playoff can be the current CCG weekend (or the current Army-Navy weekend) and the second can be the one the first round was. That enables you to move both those rounds to campus sites and enables students to be on campus for them, which I view as a must. Then the semifinals can be at 2 cool bowl sites (presumably the Rose and Sugar) on New Year's, and the title game can be back where it was in the 4 team era. No need to fight with the NFL for time slots.
It also nukes any reason to reserve byes for anybody. No one is playing some made up "extra" game, so you can seed the bracket however you want without worrying about "devaluing" title games.
Would it be hard to determine conference champs this way? Sure. But 1) it wouldn't be so difficult if the conferences didn't expand beyond all reason*, and 2) who flipping cares who wins a conference in this sport now except as a means to get to the playoff? You think any Georgia fan will really care years from now that they were 2024 SEC champs when they lost a quarterfinal game? Determine the auto bids by tiebreaker or CFP rankings or whatever you want.
The problem is no one in any of the conferences has any incentive to do this, so we'll keep those games and whatever the next format is will be clunkier than this one because of it.
* Also, if the B1G and SEC didn't decide to mutilate other conferences for money right after this format was proposed, the byes would probably have been Oregon, Ohio State, Georgia and Texas and no one would've batted an eye.