I've been wrangling the editor since it released trying to get it to work. Finally, I get some limited success in being able to generate terrain, seed AI, generate AI grid, move it to the proper place, and insert a character. Hooray. I go to google to find some images of the rogue encampment to start building a D2 total conversion for D:OS, and one of the images it returns is linked to this thread. :*( I'm late to the party. You're already beyond the Den of Evil, and I'm just now getting my editor to not eat itself.
Let me know if you'd like a collaborator. I don't know the D:OS scripting just yet, but it's just a matter of learning how they constructed the statements (some of them are obvious). I wouldn't mind working on scripting events, scripting quests, etc. if you're really into making the maps.
Drop me a PM if you don't want to have to do this all by yourself.