The thing with making threads is you want a balance between open-endedness and a concrete discussion object. If you have a basket, and you want to hold lots of stuff, but you only have so much material to make it out of, then if you make the basket too wide, stuff will fall out, wheres if you make it too narrow, it won't hold as much. Hope that analogy helps.
Anyway, basically your describing my Trigger Happy Offense RPG in a nutshell

. This will be loaded with dynamic gameplay and story stuff. In fact, I might even rename it to give it its own identity, rather than jump off the back of my quasi-successful D map of the same name.