Just off the top of my head:
Canada: Somewhere, preferably around the east coast, Quebec, or the north center of Canada, Mantiboa or Ontario, making it either very scenic, or filled with various ski hills.
Germany: Alps
Switzerland: Alps
France: Alps
Norway: I know, a bit north, right? Well Norway is now becoming a tad bit more of a destination, with a few new projected parks, Disney could easily make a northern foothold in the market by drawing people to the diverse climate of Norway. Plus, EPCOT has a Norway pavilion, so it has to be an option!