A December ONLY Dickens Christmas-type overlay for WDW's mansion would be more appropriate and more subdued than the madcap Nightmare Before Christmas IP. I feel like this could be achieved rather simply and without ridiculous extravagance or complex set pieces that take a month to install. An understated "Mansion during Christmastime" would be a nice treat and wouldn't really impact the main show elements. Even the Frees dialog could remain unchanged. I'd welcome this seasonal sprinkling so long as it's understated. A few wreaths in the Corridor of Doors, A tree in the ballroom, presents in the attic, falling snow in the graveyard...etc.