FWIF, I found this post insightful. Looks like MSY is getting a few airline additions, as well. I found it in a thread in the South forum:
Originally Posted by
ASDwxguy
The lounge information was passed on to me from a friend who works for one of the airlines at the airport. This is the prospective tenant list for the new terminal. It's a bit outdated since Silver Airways and Sun Country have added flights since then.