I'd love to see a much colder Finland, personally, since I want to know what a developed country that has 6 months of winter feels and looks like from the inside. But I do agree that for most people here it would be unfortunate.
Nothing out of the ordinary here in Norrbotten, Sweden. Seems like things stop working properly under -35 degrees or so (trains, heat pumps), so some adjustments would be needed if such temperatures became more frequent.