So now since our expectations towards D2C set are no longer limited by any hints about it being disappointing what do we expect it to be? I think its almost safe to say its not something brickbuild as we already have 2 brickbuild sets in this wave and I believe Lego HP team is smart enough to not waste $250 set spot for something like that. So yeah obvious guess is Gringotts, I would give it 50% chance now. But some sort of Hogwarts expansion, different Diagon Alley buildings (Borgin and Burkes, Leaky Cauldron) or even motorized Hogwarts Express are still in the game. Cant really think of something else. Like many people mentioned Ministry of Magic, but that is just not realistic for this scale to work. Grimmauld Place and Malfoy mannor are also better options for smaller $100 sets.