Of course you can report problems with maps if you find them. They will be fixed as soon as possible if they are in-fact possible to fix. Some issues are more difficult that others obviously.
The thing about the maps is, having too many maps in a server kind of gets annoying, as it gets hard to come in and play a map that you really like, and you can run into a lot of maps that you don't like right in a row, and that kind of drives players away.