How does my proposal eliminate conferences? If you give a playoff spot to the G5 champion, every team in every conference has a chance to contend for the national championship. Why can't you force the independents to join a conference? In what other sport can a team say they don't want to be part of any division or conference? I'm sure they won't be happy about it, but oh well, we are making a sensible playoff format and you're either in or out.
How are division tiebreakers not decided on the field? The rules are established before any games begin, and if it seems a tiebreaker will be necessary, the teams go into their last game knowing what they need to do to win the tiebreaker. Ties are usually broken based on which team beat the other when they met head to head, so I'm not sure how you can say tiebreakers aren't decided on the field. Yeah the criteria (which is clearly laid out for them rather than one team simply being hand-chosen by a committee) isn't decided on the field, but who beats the other based on that criteria always is decided on the field in a quantifiable manner. That's like saying the rules of the game aren't decided on the field.
The OOC games would still matter for potential national playoff teams because there would have to still be some sort of final poll to determine the rankings in order to determine who goes straight to the semifinals and who needs to win a play-in game. It will also set who plays who.
As for your last paragraph, yes, ACC #1 deserves to be there more than SEC #2 because the ACC team won their conference and SEC #2 didn't. The game that SEC #2 lost essentially was a playoff game for them. They already lost a key game, why should they get another chance?
EDIT: At the end of the day, it seems we just have different opinions on what the playoff should be. You think it should be the best eight teams in the country, which I think sounds reasonable except that with so many teams and so little games, it is too difficult to accurately determine who those eight teams should be without subjectively choosing one team over another. I say that the playoff should be something that you qualify for with indisputable quantifiable results, such as winning your conference. You may be better than a team that is there, but if you don't get there, it is because you either lost your conference championship game or you lost a key game at some point in the season that cost you a spot in your championship game. Even if Michigan and Ohio State are the two best teams in the Big Ten, one of them will not be playing in the championship game since they are in the same division, and there will be a team playing in that game that isn't as good as they are. Oh well, that is how playoffs works.
You seem to be trying to change the FBS landscape to setup the playoff system that you want whereas I am trying to improve upon the playoff system that we have with the existing FBS landscape.
If the top 64 FBS teams were used to create 4 relatively equal 16-team conferences and each of those 64 teams played 12 conference games a year then an FBS playoff system that is based solely on conference winners would make sense. But, that isn’t what we have.
Your G5 champion would have to play too many games to win a national title in your 5 Power 5 conference winners & G5 champion 6-team FBS playoff system scenario.
Division tiebreakers are decided by a committee before any games begin and when there are 3-way or 4-way division ties they frequently don’t favor the best of the 3 or 4 teams.
When they don’t favor the best of those 3 or 4 teams then the fortunate undeserving team gets to go play in the conference championship to possibly earn a national title playoff system slot. Is that fair to the more deserving teams ?
I’m for getting the best 8 teams in a playoff so that from that point on the National Title is decided on the field. A true National Championship playoff system that is decided on the field.
You seem to want to use a poll to determine who gets a bye and who doesn’t from your 5 Power 5 conference winners and G5 champion, which puts way too much power in the hands of a committee of voters at a point when everything should have been turned over to a simple playoff system on the field. Do you realize how much of an advantage it is to get a bye in a relatively quick playoff ?
In the current FBS landscape, if ACC team #1 wins 6 ACC conference games, their division and their ACC Championship game and loses 4 OOC games finishing their regular season with 6 losses, they are a 7-6 team at the end of the regular season.
In the current FBS landscape, if SEC West team #2 loses their conference opener by 1 point to division rival SEC team #1 and finishes their season with 1 loss, they are an 11-1 team.
The fact that you would rather see the 7-6 ACC team in the playoffs instead of the 11-1 SEC team proves that your proposed system is flawed.
All regular season games are important. Your system doesn’t consider the importance of OOC games enough. By focusing on just conference games in the current FBS landscape all you are really doing is shrinking an already small sample size of games currently used to determine a true national champion even further.
Let’s get the best 8 teams in a playoff and see who wins a true national championship that is settled on the field for a change. It will make a lot of money and it is the right thing to do.