I mashed up Quill White Box and Troika! and had fun. I haven't written up the AP yet, but I have written out the rules and the scenarios for others. This first rev is a little rough and I discuss ways to change it in the future. Either way the scenarios will work fine. Troika is fun - I might be going a bit more science-fantasy than Planescape but hey, the setting is nothing if not implied and malleable.