Unfortunately Christmas games would only sell for a short period of time and game companies would rather make a game themed for year round interest.
I still think Christmas versions of existing games would be great.
Carcassone set at the north pole?
I think antarctica would be a much better theme. Penguin markers instead of people would be so cool. We'd have to call them menguins.
What would the markers be for a north pole game? Melves?