This. NWod/ChoD system just works so well. Of course I'd avoid it if the setting does not fit, but non-thematic d20 should be replaced by dice pool whenever one can do it. I haven't tried this yet but I really want to run a medieval fantasy game with Mage magic system. Pretty sure there are some games already implementing something like that from the start, but if magic was ever a thing then mage seems like the way it would be approached, messy and dangerous.