I think that Lookout should be able to lookout on his own house to see who is visiting him, like Transporter and Spy can use their abilities onto themselves.
There should be no limit to how many Vampires can be in the game, because we already have a Vampire Hunter(which is also non-unique), and Vampires need to wait a day, so it'd be good if they could just spread it to as many people as they can.
All other attributes/results, and requirements remain the same.