I agree with the Vin's comment that the expansion is unlikely...not sure that the Colts are going to head to LA, one would think the city would do everything possible to keep a year in/year out contender at home.
I think that if the move is made (from whomever to wherever) that the divisions will not fluctuate. The league doesn't want to do any serious re-alignments after they just ironed out the divisions 2 yrs ago. Plus...I think that the NFL will want to maintain the semi-historic rivalries that are currently established.
Who's the Man?... J-Man, that's WHO!
Eat 'em Up, KATS!