That would be fine. I do think that non p-5 teams have to have a way in, that isn't dependent on there being no non-conference champion p-5's with a great record. I don't expect non p-5's to win, but we can't call it a championship if half the teams have no direct way to compete in it.
Would like it better than what we have. I'm still of the opinion, though, that the best thing to do is figure out what ranking everybody likes best and make 1 play 2. Leave everything else the hell alone. All the tourney and faux under bowls do is give a false impression of competition and attempt to generate TV ratings.
Let the committee change it year-to-year. If two teams separate themselves, that's your game. 4, 6, 8? Make Baylor and TCU rematch for a spot? Sure. You probably can't sell TV rights or secure hosting for that, though.
Sounds kind of like the +1 system, which would be superior to the current one. Though this would have been a +1 year.
The problem is you have talking heads talking about how stupid that is because in week five there are a jillion undefeated teams and it'll never work out. Then it never gets readdressed when it inevitably does work out. Instead those guys whine about how some one loss ACC team whose best OOC win was the Citadel is getting screwed.
i guess we don't always know if #5 doesn't deserve to be there or not. at least any more or less than #4.
8 is the proper number. Remove a regular season game. 11 game seasons, force conference championship games, force conference champions only for 6 spots with 2 at-large bids. This guarantees every P-5 conference a spot for their champion, a spot for the highest ranked non P-5, and then 2 at-larges for the best of the rest which could include Notre Dame (maybe guarantee them an at-large spot if they finish in the 10 or *sigh the top 15 like they had in the BCS, given they play a real schedule).
The only thing worse than 8 would be 9. Given that I've never once heard of a situation where I felt like four teams were justified in their postseason bid for a national championship, I'd be willing to wager that 500 years from now there still won't have been a situation where 8 teams had a valid claim.