People like the originals because they are balanced and glitch free (for the most part). People leave on the custom maps because half of them are retarded and the other half take too long to learn. People want to play on maps they are familiar with and they are going to play on servers that have those maps. I would take ALL custom maps out of the general rotation (except a few like the CPL maps) and allow them only by ADMIN INITIATED vote.
EDIT: Also, the download server needs to be moved back to Aphrodite. There is no reason for it to be on Tron with the load it has on the raid array. Maps forever to download, even on campus, and that’s wrong.