Yeah but if you do away with the championship game and have like a 10-12 team playoff then there's pretty much the same number of games as now right. I mean, teams are playing 13 and 14 games right now.
Travel could be an issue I agree. It would be tough enough for a school to go to Pasadena one week and then fly to New Orleans the next. And we're not even talking about the fans, so yeah I can see travel being an issue. Maybe you could alleviate some of that by having the initial round or two of the playoffs at home fields. That would help some, but the opposing teams still have to travel, so.... :?
As far as the lesser teams not in the playoff, they just play the one bowl game.
I'm not saying I have the answers here, just throwing out some things for discussion.