Memphis and Louisville are also very well situated in my opinion: It finally connects the (Mid)west to the (South)east and the Caribbean. For example I have a lot of airports in the Western US as this is my favourite US region (KLAX, KLAS, KPHX, ORBX NorCal + PNW + NRM including airports, KDFW, KDEN, KLIT,...). But I also like to fly in Florida and the Caribbean. And so far there was always a big gap in between. As I don't like longer flights in the sim (and in reality I don't either), these are finally 2 locations that offer short haul flights into both directions. Atlanta also comes to mind, but that hasn't been made well enough so far.
So thumbs up again for the choice, and the GSX cargo expansion will come right in time for these airports. Very well planned!
And now we are patiently waiting. There are still more things to discover in the sim that we ever have time for. And actually there are more very good ready-to-buy addons than I could ever buy within my personal monthly limit.
So, happy flights and keep on the good work.
Cheers, Dominik