I would have loved it if someone, or FFG, created an additional book for the supernatural scenarios. These scenarios could be based of the Universal Monsters (i.e. Vampires, Mummies, the Occult, etc.) with a slight twist, as usual. That could provide a good deal amount of fun. I'm actually honestly surprised it wasn't done. Now, I wasn't playing these games when they first started releasing the RPGs, so I don't know their criteria that they built series around, but come on, let's get a few more books out.

P.S. If there's a site that provides additional scenarios, please link.