GM mode is ABSOLUTELY worth the time. The thing is, you don't tap into its true power unless you also build your own areas and stuff in the editor. When you combine GM mode with the editor, your imagination is the limit.
I haven't seen any player made maps yet, can someone steer me to a few?
I have made 3 or 4 that are currently available in the mod in my signature.
I'm also working on
a huge fortress at the moment.