Bit late, but if you're still looking around, undergrounds might be of interest if you're open to AU! It fits all your other preferences. The game is set in London and the plot is based around the politics of various supernatural factions e.g. vampires, witches, werewolves etc. Lily or Stiles could be a great fit, and I'd personally love to see a Moriarty shaking things up.

There's more info in our game ad if you'd like to check us out!