So anyone looked at this as a setting yet?
Carnival Row
Not that I've seen, but the upcoming Expanded Player's Guide looks like it will be good fit. There's a new setting in it called "Monsterworld"
QuoteHorror has been a part of human storytelling since the time of cave paintings. In the 1800s, a new form emerged featuring a series of monsters whose legacy has echoed across the years, most importantly in film. Today, nearly everyone is familiar with these terrors: stitched-together corpses reanimated via chemicals and electricity, beings neither dead nor alive and damned for eternity to drink blood, shapeshifters cursed to dread the coming of the full moon, and many more. These are the horrors your players face in your Monsterworld setting, facing their darkest nightmares in a world where just surviving is a monumental achievement.
Well, there is the official Cypher System game you can pick up for inspiration. Haven't had a chance to look at it yet, though.
There's about 15 pages of lore.