I'd like to see some more teams, the talent level is up there and there is talented players having to go to other leagues now.
Cities I think would have an NFL team.
Los Angeles(give them 2)
Chicago(besides the Bears)
Toronto
That would add 4 new teams to the NFL, and I think to keep things even in the divisions the NFL would need to add 4 more teams and I think the following cities would be solid candidates.
Oklahoma City
Salt Lake City
Charleston SC
Memphis
Portland, OR
Calgary
There are cities without NFL teams which I don't think I'd put one in.
Milwaukee-The Packers basically own this city and I just don't see it working
Las Vegas-Love the city, but the gambling and heat are too much
Richmond, VA- With the Redskins, Eagles and Ravens so close it just wouldn't be a good fit.