From PFT:
I hate the idea of adding an additional regular season game. The schedules are absolutely perfect the way they're structured right now; the NFL doesn't need to change a thing. I also dislike in principle the idea of taking away home games from teams and their fans. I'm a little warmer towards the idea of playing neutral-site games in L.A. in lieu of either expanding the league or moving an existing franchise, but I think it would ultimately just be delaying the inevitable.
I just feel like football is the one sport where you can argue that every game is important, so it's a little more meaningful to alter the normal schedule of a team, take away a home game, etc. than it is in, say, baseball. The Red Sox and A's had to play meaningful games in Japan, sure, but they've got 160 games to get back into the scheme of things. You don't have that luxury in football.