He's mentioned why before: the prospect of a "deja vu" like house with the same room repeated with different scares. But again he's viewing from more of a design prospective.
I loved Emerald City! Tarsem is so underappreciated as a director. His films are always so beautiful. I still watch The Cell at least a couple times a year. I've also read all of the Wicked books, even the last 2 are only so so IMO. I'm kinda an Oz nerd.
Random thought: I know not everything has to fit the theme. I know the rights of what I'm gonna suggest is owned by Disney. Buuuuuuuuuuuut, if the rumors about a Oz house are true.....what if it's inspired by/slightly based off Return to Oz since it came out in the 80's?
I have seen a video of the Chucky show on YouTube. I honestly haven't really paid attention to Hollywood's event until recently with all the shared houses we keep having, probably around the time La Llorona moved over. I had no idea of all this. I've only been to that park once and I literally only got butterbeer and did the tram.
Seriously. I was watching a walkthrough of their Blumhouse to see how they did HDD, and I was like "oh, the people on here didn't exaggerate this black hallway thing did they?". I thought it was cool that the house had outdoor sections(?) tho.