This looks absolutely awesome! Not only do I want to play it, I also want to hack it in various ways to emulate the Invisibles or full-on Mage the Ascension.
Invisibles would actually be easier, probably. With Mage, I'd feel the need to include the, well, Ascension aspect and that means something resembling seekings, avatars, enlightenment. But perhaps that can all be done without mechanics?
Edit: I ended up writing up some alternate/expanded things for the game, primarily alternate takes on Paradigm and Paradox so far, if you're interested I can send you what I came up with.