Malta is a very important area not yet represented. It's a small land-area and consequently will allow for a great variety of textures so that it won't get repetitive. I tend to prefer smaller maps with rich detail than large, generic ones.
I've been having a look at an existing map that Maraz originally made (the first ever map to be created when mods came out, I believe). There's a lot of potential for a brand new map if a team could be created. New objects would be a must though.