Meh, another problem I haven't heard looked into, was the geography of the place now... there was supposedly enough sand and water displaced to change the coastline and the area itself. The place where the port was last time, might not even be near New Orleans, if they pick that place for another one. It'd be an expensive place to repair too, the business folks might choose an empty part of the coast... this might not even be the last big hurricane for that area. I do know the area is too violent right now to send geographers though.