Well, to be clear, I am sure the neighborhoods will get rebuilt, and in the vague outlines that they will be patterned after the previous layout, but what I'm saying is that they won't get rebuilt in the "unwanted" state that they were before Katrina. If slums are rebuilt, they will be the nicest gosh-darn slums in the world. =)
For awhile. And some might sell, and pocket the profits. Your Hispanic comment is interesting, but it will not happen to any great degree. That would just be an "explosive" development. There will be massive set asides for the construction, and it will cost twice what it should. There will be much to complain about regarding NO for a very LONG time.