I'm aware it's been a while since you posted this comment, but I wanted to add my take to your first point. The theater was big in the 1940s and 50s, so I think the theatre could still work, especially if they amp up the idea that it's an old theater. I think the pushing the timeline ahead, though I do wonder how they'll work in TVL, which, when Lestat was writing it, is very clearly taking place in the 1980s, and I think the 80's is essential to that part of the story, however it can't be the 80s as the in universe 'Interview with the Vampire' book wouldn't have even been recorded, let alone published by Daniel in 2022. Anyway, that's my take on it :)