I like the Chronicles of Darkness (formerly God Machine, formerly New World of Darkness) settings, but I'm not thrilled with the mechanics. It seems like what you would need to convert this stuff to a BRP family system would be:1. rules for static magic (spells);2. rules for free form magic;3. rules for lots of fiddly powers;4. rules for how to acquire "juice" for said fiddly powers;5. rules for some sort of corruption / virtue / vice / humanity / sanity mechanic;6. rules for ephemeral / spirit / ghost things, including summoning7. rules for some kind of other dimension (astral, etc.)After the Vampire Wars would probably be the best base.Where would be your favorite place to get those from?My initial thoughts:1. rules for static magic (spells)Enlightened Magic?Mythras?The Laundry?2. rules for free form magic;no idea3. rules for lots of fiddly powers;not sure. BRP Gold has psychic and super powers. Maybe?4. rules for how to acquire "juice" for said fiddly powers;not sure. e.g., vampires drink blood, Geists eat ghosts5. rules for some sort of corruption / virtue / vice / humanity / sanity mechanic;Humans, Hunters, - CoC, Delta Green (new)Not sure what you'd use for other splats 6. rules for ephemeral / spirit / ghost things, including summoningMythrasThat BRP Magic book that isn't Enlighened Magic but is like Stormbringer's magic system7. rules for some kind of other dimension (astral, etc.)no idea