I'm sort of at a loss trying to figure out how to make these separate editors and mesh them into Edreoll. So what I am going to do is make all of the editors accessible to all clients, but can only be accessed if you're a mod for Edreoll or ZYNKCO. Such editable things can be:
World Map Locations
Pretty much everything. I'll make all of the content and place them into the global arrays, finish up Edreoll's Save File format, get the general code working, and then design all of the content in-game.
I think that would actually be a lot of fun. It could also be a good idea for player-created worlds.