Closed realm difficulty

I'm looking to exponentially increase the difficulty automatically for each player that enters, similar to the /players x effect, only twice as much per add'l slot.
I have found plenty of posts and information in regard the /players x adjustments in .dll's, and I've been successful thus far, but everything I can find only changes the singleplayer/tcp game side of things. I can't even make the basic command available on a closed realm. Do I need to change the reference to client/common or something to look for it? I'm assuming there's a pointer of sorts that "turns it off" for bnet (sorry if i sound ignorant im sort of new at this)