Re: Scion
I've always considered Scion to be a subsystem (or rather potential subsystem) of Mage. I've always considered both Mage: the Ascension and Mage: the Awakening lacking when it comes to sheer dealing damage and combat in general. Sphere system had virtually nothing to offer in terms how bad@$$ is the demon (or tiger or robot) you just summoned and Do rules are nothing short of ridiculous. On the other hand, as an action game Scion works fairly well (something which cannot be said for its predecessors such as Aberrant and Exalted), so it struck me as a logical choice.
Of course I'm aware that one cannot patch the two systems simply with a duct-tape, but if we were to add a viable combat system to match iconic prose we associate with Mage, this is where I'd start. I'm not denying obvious problems with balancing Scion with other WoD games, but that does not concern me because I've never allowed crossovers in my chronicles (or rather I've always used Mage rules to simulate powers of vampires, werewolves etc.).
On the other hand, mages are supposed to be able to do all scions can (at least at hero level), such as making themselves stronger, faster, more beautiful, fly etc. and I've always permitted my characters to do that, albeit with little consistency. At least with that (consistency) Scion is supposed to help.
Unfortunately, by the time Scion came out, most of my gaming group turned employee on me, so there was virtually no playtesting done. Still, if anyone would actually be up for experimenting with Mage and Scion, consider me very interested.