So something similar to Mage: The Ascension’s softer magic system? Like, instead of the "Spheres of Magic”, maybe instead it’s the interpretation of the player's Classpect and its effects? I also remember that the Sburb Glitch FAQ actually attempts to classify, or give the tools to classify, Aspect interpretation in chapter (86) and (87), though I'm not sure how much that might help.

https://archiveofourown.org/works/340777/chapters/1306766 (link to chapter 86)