I'm here to announce the UGX Updater program. Aidan's been developing it for about 1-2 months and it's finally nearing completion.
When opened, the program will check for updates from UGX for all of your currently installed UGX maps, as well as allow you to browse and download UGX maps you don't already have. It will download and install the maps/updates for you as soon as you give it permission.
Screenshots and release soon.