Tough decision for WB in trying to figure out how they adapt the Hogwarts world. Returning to the castle or not to. Can you build another open world game and incorporate Hogwarts and keep it fresh?
Why not go to the Fantastic Beast world, in an assassin's creed 1 type open world of having multiple cities. Paris, London, and others in the Victorian Era again following each city.
Having beasts as companions, having to capture beasts as side quests. Using your beasts in a way like Cyberpunk with cyberhacking and sneaking.
I dont know, just a shower thought. I would love to explore as wizard in the "Wizard Paris" and thought it created a unique game.