I guess you could claim the voters are a committee, and to an extent that's right. In football, I think polls are almost always going to be the best way to go, because the sample size is too small otherwise.
Still, I'd like to see a 16 team playoff, but not a Top 16 teams playoff. The auto-bids are the reason why seeding matters in the NCAA tourney. If the NCAA tourney was the top 64 teams, the difference between a 1 seed and a 6 seed wouldn't be that much. It would be pretty similar actually. That's why I like the 16 team format.
Yes, it would add a total of 4 games for 2 teams, but we've already got some teams playing 14 games. I don't think 17 games for two teams is too unrealistic. They play 16 in the NFL, plus pre-season games and playoff games.