I have to admit that Goose made it really difficult to predict what's going to happen in the show, but i'll try my luck!
1- pomni is ribbit
this one is kinda crazy but i'm not throwing it away... there are a few clues pointing to that, like the fact that pomni's eraly design wa a frog and that pomni means "to remember" in russian, and the funniest to me: pomni does a frog pose in the intermission bit.
2- the "rose diamond moment"
i heard goose said there would be a "rose diamond moment" in the next episode. a lot of people think it will be that pomni is actually ribbit, and even tho there are (weirdly) a few evidences pointing to that, i believe it will be just that Kinger is the creator of the circus, or that Caine absorbed Abel or some shit.
3- Caine "killed" abel
honestly, i believe caine and abel were 2 AIs and caine absorbed abel somehow so he could control the circus and make his adventures however he wanted
4- The ending of the series will not be with them escaping the circus, but making it a good p-lace to live and staying there.
this one is because goose said that the lesson of the show is that you can find value even in stagnation.
if you have any theories, feel free to comment :)