I'm a theorist Homestuck that just sits and things about Homestuck a lot. I've got a theory about the whole house situation, and in my head it's basically 95% confirmed, but I wanna ask your opinion since from what I've seen you know a lot of stuff too! My theory is that after the Caliborn fight (shown in claymation that one) the beta kids are stuck in the house juju. It's heavily supported with the post Canon Snapchat that shows the felt and Jane and such doing something weird to the house.

The House the Felt is going through is the end-game portal to the New Universe- They look the same but they’re two very different things, sort of a teller of Beginnings and Ends- A new beginning for the Kids, in a new World, an end to their tale and that of Lord English. There’s no indication they two are connected in any way, physically, rather than just thematically, but there’s a good bunch of connections to be drawn from the two to theorize, so honestly who knows!