In an ideal world it would be in a different region each year like the super bowl or final four. This would help get the word about FIRST out around the country as well as helping to equalize travel costs among the teams. I understand that this would likely cause additional difficulties in finding venues and make organization of the event even harder, so I doubt that it is about to happen. Barring changing annual locations I think alternating between Nashville (or Atlanta) and Las Vegas (or Salt Lake City) would help equalize travel costs without increasing organizational overhead too much.
Brazil or New Orleans would be the funnest locations if we could make the competition in time for Mardi Gras.
