I'd like there to be some form of a scare factor, but it needs to be somewhat avoidable. Let's say there's a spooky looking ghost ship. Inherently it sparks the thought, "That place looks scary, and there's probably something scary in it." Now if it looks scary, and I think it's scary, than it better well be scary. I can choose to investigate it if I want, or I can save it for when I have an itch for a "scary" mission.