I've been watching CFB almost my entire life and it's still the same bullshit. There aren't any real "rules" and they always find a way to have some star chamber bullshit, which leads to endless arguments and stupidity. Way back in the day it was dumbass sports writers that decided who was the Nat'l Champ. Then it was the BCS which used inscrutable computer algorithms combined with dumbass AP voters and coaches' votes. And now it's a committee that makes decisions while having some arbitrary rules like conference champs get in, G5 gets a spot, etc.
Make divisions in these conferences. Make the teams play everyone in their division each year just like the NFL. You win your division you get in. Cut back on nonsense OOC games if that's what it takes to have time for a longer playoff. This is why the NFL has become as popular as it is. It's basically completely fair across the board. Every team gets the same salary cap. Every team gets the same amount of draft picks. Every team has to play the teams in their division. The sorry ass NFC South will send some team with 8-10 wins to the playoffs, while teams with more wins in other divisions will get left out. But the rules are the rules, everyone knows they're the rules, and so no one complains about it. But nah, that's all too smart for CFB. Instead of a logical system we have teams literally playing no one of note all year, still finding a way to drop a game or two, and then going "TA-DAH!" we get in because we haven't lost 3 times! We have to argue about SOS, SOR, ranked wins, bad losses, and whatever else because it's all a clown show.