My input would likely be ignored as the person in charge of the maps is not known for listening to people outside of NB.
It's your server, you can do your own thing. When I go to play with a friend, however, and Boxworld, ADR, Dormitorio, and its ilk show up, it might as well not even be an XMP server, so I treat it as such and leave. I know I'm not the only one either. You've got a good server. Keep the good (stock) maps in, throw in a new one here and there, and leave the pointless 45-minute garbagefests such as ADR far, far away. I think thats the best approach.