Seeing as there is literally one "map" now, the loading gui is now just a picture with "Loading" and a bar.
It's quite boring, and does not really give info about the server.
So I think this loading gui would be a lot better! The images will fade into others, like the main menu. If that is not possible/too hard then I suppose it could be a random image every time the gui opens.
(see image attachment please)