While I can't say that this would never happen, I think that the possibilities are extremely low. Even Goodell knows that the Saints fanbase is one of the strongest and most loyal fanbases in the NFL.

Exactly!

And one of the main factors as to why the Saints will never be leaving New Orleans is the Super Bowl itself. Of all franchise locations in the league New Orleans remains the most well suited to host the big game when factoring in the infrastructure (hotels, restaurants, entertainment, and international airport) and the climate. The game is mandated to be played in the home stadium of one of the franchises every year and will continue to remain in the regular rotation. The upgrades being completed this year were no doubt are part of the deal to keep that spot intact for many years to come.

Win or lose it has grown to the point where tickets will continue to be sold out every year, be it to Saints fans or to ticket brokers, given that New Orleans remains one of the top tourist destinations in the entire country.