In fact, I do agree.
And I proposed years ago, that the solution to NOLA is to turn it into a commercial landfill.
It would solve all sorts of problems.
Fill in with trash between the levees, compact it, build the new port on top.
That is actually a good idea! :)
I am sure some other obscure critter would be horribly threatened according to environmentalist but it might be cleaner in the long run. Much of New Orleans resembled a landfill prior to Katrina.