Grant 6 expansion franchises in Europe to Amsterdam, Barcelona, Berlin, London, Manchester and Rhein, plus 4 more in the U.S. to Los Angeles, Oklahoma City, Portland and San Antonio. Then realign into 7 divisions of 6 teams each and eliminate conferences altogether.
European Division: Amsterdam, Barcelona, Berlin, London, Manchester and Rhein.
East Division: Baltimore, Buffalo, Cincinnati, Cleveland, Indianapolis and Pittsburgh.
South Division: Atlanta, Jacksonville, Miami, New Orleans, Tampa Bay and Tennessee.
North Division: Chicago, Detroit, Green Bay, Kansas City, Minnesota and Saint Louis.
West Division: Arizona, Dallas, Denver, Houston, Oklahoma City and San Antonio.
Pacific Division: Los Angeles, Oakland, Portland, San Diego, San Francisco and Seattle.
Expand the regular season to 17 games, including home and road vs. each division opponent = 10. Each U.S. division plays 1 other U.S. division = 6 + 1 European team per season, while each European team plays 1 U.S. division = 6 + a 3rd game vs. 1 other European team per season. All games between U.S. and European teams will be played in Europe. The pre-season is reduced to 3 games, 1 home + 1 road + 1 neutral site, including the Hall of Fame Game.
The post-season is expanded to 16 teams, with division winners seeded 1-7 and wild cards 8-16. Since conferences are eliminated, any 2 teams, even from the same division such as the Chargers and Raiders, could meet in the Super Bowl, to be played at the home stadium of the highest seeded team. The Pro Bowl is eliminated while the Playoff Bowl of the 1960's is reincarnated, involving the losers from the semi-final round ( currently conference championships ) for 3rd place in the NFL.
Rosters should also be expanded to 60 players, including 50 active per game, plus 15-man practice squads, while the off-season limit should be increased to 100. I am not advocating doing all of this in 1 year, yet rather by adding 1 expansion franchise per season for 10 consecutive years, expanding the college draft and giving each expansion team 75 total selections before their 1st season, instead of holding expansion drafts of veteran castoffs. This way each expansion team can start from scratch and build their team the right way.