don't forget expansion. Two scenarios: add eight teams with one additional team in @ division OR add four and re-shuffle into NFC east central and west, with AFC east central and west. The latter is easier in terms of adding teams but awful with a major re-shuffle. And yes I foresee teams outside the US...london, 1 or 2 in germany??, mexico city, maybe toronto, plus some more in US like San Antonio, etc. I believe we will see something like one of those 2 scenarios above happen within the next ten years.