The logo could be removed to free up space. Also, the mapshot could be shrunk/offset and the name of the map could be put on the right. Another possibility is to add an effect or something on the mapshot and actually have the whole shot be the background for the loading screen (like quake3 does). Maybe just a smaller area of the screen with the title and such on it, and the download progress/tips/etc. would be below that.
I'm still working on getting the full map name displayed, so don't change anything just yet.