I disagree on 8 teams, half of each conference making the playoffs is not the way to go. 7 teams could be considered "pushing it", but there have been plenty of times when deserving teams missed out on the playoffs. Two teams that immediately come to mind are this year's Cardinals and the 2008 Patriots.
Plus, the only changes a 7 team playoff would do is add one extra game per day on Wildcard weekend and eliminate one bye week. If you go to 8 teams, you almost have to have two seperate wildcard weekends.
just b/c a team wins 10/11 games doesn't mean they deserve it. The Pats had a cake sched in 2008, they weren't nearly as good as their record. Ari turned it on late and were playing well but not well enough. If they want to seed top 6 regardless of division that would prevent an 8-8 team(or 7-9 as happened a few years ago) from making it as division champs and would allow teams like Ari to make it.