First, I love the over-all idea and possible look of this world. I can easily imagine what the team would do with the fishing village (lol, three houses and a pub, but it would be very cute!), and a remote mountain neighborhood. Maybe a middle neighborhood with a more temperate forest? Aesthetically, this type of world would have a lot to offer.
I don't have time to get into it now, but I think some of the specific ideas you've suggested are either already in the game or would probably be unrealistic to add/hard to execute. But you've come up with so many creative ideas that I think there's still plenty there to add life to a full pack. I'm particularly intrigued by your argument that this would be a good opportunity to add glass blowing and jewelry making, as those are feature that interest me greatly. Skating on a frozen pond, exploring Viking ruins, and the festivals you mentioned also sound great. I think there would definitely be an opportunity for fun new harvestables and recipes, which is always important to me. New boats would be great. I would definitely hope for a world like this they would build on the opportunities to swim in the rivers and do some SE-style hiking.
I do have a feeling that it's something we wouldn't be likely to see soon, as there are some strong similarities to both Snowy Escape and Cottage Living. But if they aren't working on a pack like this yet, by the time it came out, that would probably be fine.
Bottom line, yes, I would definitely buy this pack.
