Here's mine. I would love a simple effect built into each ride. At one point I would love for our Ghost Host to mention "Please excuse the passing of one of our inhabitants" and then you suddenly feel a cool push of cold air shoot from one side of the buggy to the other side or outward towards the front. Basically wherever you're sitting you should feel a chilly presence pass through you as one of the Haunted Inhabitants passes by your Doom Buggy.
What are your spooky ideal enhancements for the new Haunted Mansion Refurb?
And anything goes. Have some fun with this thread.