Weird lightshow mob: Will Klaus pick up any kind of ghostly-vibes off of them? Is there a similar "void of nothingness" there, like when he tried to conjure Five? What would happen if he tried to manifest them?

Smarmy Snow Stranger: ....same questions as above tbh. and he's not reachable, right? like we can't physically get to him?

The crack in the world: Is there anything in there? Can they see down into it? If they throw things into it, is there a definite sound signaling an end/ground below, or is it an empty abyss? What happens if someone's dumb enough to try and crawl down there (I don't trust our idiots)?