Why not? It is indeed a really interesting way of discovering this world of editing, composing, producing short movies with 3D characters depicting funny or epic stories. World of Warcraft is my addiction. No doubt about that. So why not to try out some machinimas based on WoW engine? ;)

First things first.. here is a really interesting hub of information on the machinima basics:

http://casualwow.blogspot.com/2007/08/machinima-guides.html

One more idea to retain from Blizz's new game Diablo3. Object displacement and dungeon rooms are completely random:

http://www.gamespot.com/pc/rpg/diablo3/video/6199524/diablo-iii-interview-5

This is both an incredible idea, and kinda of must have also, for diablo 3 or any game alike, where you may be re-entering the same dungeons multiple times so they will never feel to be repeatedly boring. :)