NOLA is the 47th most populous metro region in the US, similar in size to Salt Lake City and Hartford, CT, and might be underwater in 30 years. I don't think that city should be investing cash into a new baseball stadium.Is New Orleans no longer viewed as a viable MLB market? It seems I never hear it mentioned as a candidate for expansion or relocation anymore.
In the 1970s, New Orleans courted the Indians pretty hard, but that was largely because they were constructing/recently opened the Superdome. They might have been successful if they had simply pushed for a complete relocation, but they were floating a concept of a shared team like the more recent Tampa Bay/Montreal proposal, which was never going to receive enough support from the other owners (I believe the White Sox had already played some games in Milwaukee when it was between franchises, and all it did was hurt attendance in Chicago).
Obviously the Superdome would no longer be a point of attraction, but I'm also not aware of any city already having anything close to an MLB facility just waiting to be used. I guess Charlotte and Nashville might have better football stadiums to use while a baseball stadium was being built.