1— anything new they build will also have resale restrictions.
2– yes, complete tear down. Remember, they can’t tear a building down while it’s under contract. Meaning, it’s their ONLY chance for 50 years. Think the quality of the Boardwalk construction was meant to stand for 100 years?
They need to be thinking about guests in the 2070’s to 2090’s. They will want more modern construction, able to serve more guests, thinking about the needs and wants of evolving future guests.
Not saying every 2042
DVC building will get a complete tear down at once. But I fully expect that for some of them, especially those that stay DVC. I also think this is part of the reason Disney is putting very little long term investment into the Boardwalk now. (Replace the clown slide with… stickers).