What is the point of division titles then? Seriously, just make it two conferences, and the two best records get a bye-week and homefield for week 2, and the other four teams in each conference play the wildcard weekend with the homefield determined by record.
This rule change completely negates the point of divisions, IMO. You'll still run the risk of 8-8 division winners and 10-6 teams that don't make the playoffs. That's not "fair", which is the main reason for this current rule change to begin with!
Besides, I'm tired of being on the bottom of the best division in football. We need two conferences and nothing else to keep things "FAIR".