Right now, we don't want to add any custom maps to the servers. We don't want to force players to download any custom contents when connecting. Will we consider a Custom map server at some point? Maybe, if there's a real demand for one.
As for punishing hackers, I'm pretty sure humiliation is not the best way to deal with them. It's true we do not watch the servers 24/7, but even if we're not online, one of us has access to the chat log and other very useful logs. If you suspect a cheater, use the /request command in chat. That will warn an admin, and then report the suspected cheater(s). If it's obvious like a name-changer or a spy 1-shot'ing every second, just yell his name in chat.
We're working on a new way to report players. It's not ready yet, but it's coming.