Good point about the Dolphins. Geographically they could move the Dolphins to the AFC South, Chiefs to the AFC North, Ravens to the AFC East, and the LA Colts to the AFC West. They won't do it due to rivalries though.
Vinny also has a good point about the LA television market and how that could impact a division with relatively low ratings. Jacksonville, Indi, and Nashville are definitely 3 of the smallest markets in the country. That is why these three cities were some of the last to get a franchise.