I meant Hallow'd Past on Parade. Stuff starts to blur after a while.
Regarding your additions:
Richie opening scene (could be done a number of ways) - You don't think they'll attempt the most famous scene of the whole IP?
Actually, I don't. I think they'll have Richie standing in front of the Neibolt house/facade. They may include a drain off to the side with a Pennywise head in it. But yeah. For the guests, it's a passive scene (the scare happens to someone else) which is exactly how you don't want to start a house. Also, putting it at eye-level is difficult because it's a drain and a child.
Neibolt clown room scene (medium sized room) - one of the most memorable scare focused scenes in the movie
- Beverly's father (could be in same room as Bully, similar vibe)- one of the most memorable and terrifying elements of the film
- The Bully killing his father (small to medium room) - I don't remember his name but he is also a scare that would make the house less repetitive and feature this scene's great imagery
And, yet, I've forgotten all of them. You mentioning the clown room jars a faint memory, but you could replace the bedroom with it. The other two scenes I can't remember a single aspect of. I remember the allusions to Beverly's father abusing her, but do you really expect Universal to bother with an explicit representation of child abuse (with possible sexual abuse thrown in)?
And no, I didn't list them chronologically because I don't expect it to be chronological.
Fact of the matter is IT will PROBABLY be in a soundstage. But to argue that it "has" to be oversells what is necessary in these house builds.
The megahouse is legitimately the only house that has to have a soundstage. Crowd control is why they put everything else everywhere else.