Could the wz Files hosted here be in popular compressed RAR format? http://royals.ms/downloads/wz/ I compressed the map.wz and it shrunk by 1/5 of its size. It could help players and free up more server resources just by a little bit as downloads will be completed faster. And if you pay for server fees by amount of data used, that could help shrink costs a teensy bit as well. While zip is universal, rar compresses significantly better. But of course, winrar is not officially free, despite that the application does not shut itself down if people use it longer than the free trial would like you to. That's what might stand between choosing RAR over the ZIP format. Spoiler
I would like this as well since I currently can't use that much bandwidth for downloading the new updates (so I haven't been on in quite a while).
