Imagine, in some twisted, alternate universe, Disney has yet to unveil a Nightmare Before Christmas overlay for the Haunted Mansion and has instead made an overlay themed to the 2015 holiday-horror classic, Krampus. Imagine, if you will, a Haunted Mansion where the horrifying creatures from said film run amok amid decaying decor reminiscent of a Victorian Christmas. The hulking, hunchbacked figure of Krampus lurks from chamber to chamber, stalking the Mansion's patrons. The Ghost Host has a peculiar German accent, perhaps being a different ghost entirely. This is truly, Disney's horror attraction.
This is a decidedly odd concept, but I'd love to see what the WDWMagic community can come up with. Let the brainstorming begin now!