Unfortunately, you're right. I think NO will be shut down longer than 4 months. But nobody can be without any income for that period of time, especially when whatever savings one has will have to go to some incidentals in rebuilding your own life and home.
Baton Rouge will become the major city in Louisiana. No owner in his right mind would rebuild in Louisiana unless he had an iron-clad guarantee that something like this would never happen again. And that can't be done, given where NO is located.
I agree with you both, though yesterday I was told that I was totally exaggerating. At the VERY least, the priceless history of that city will be gone.