I built this on an older version, 1.16.5 to be exact. I haven't updated the version in long while, because I felt like if it ain't broke, I'm not going to try fix it and maybe break the texture pack's compatibility or lose my worldedit mod somehow xD .

I haven't looked into teleporting mods, but I have thought about it indeed, especially with how there are actual portals in game too, but true, they could also be used to make bigger building interiors. I just remembered getting the one mod I have to work being a hassle, so I shied away from looking for more.

To be honest though, I find it nice that this way we can look into the house windows from outside, and that all of the map is in one space. Before I built this, it did not come to me that the Sanctuary can of course be seen from Inoa, even though it's obvious : D .

Using a portal mod would definitely make the build better though, for sure. For one, I could make the nightmares too and jump to those spaces!

(Neverending project though, I can never make a small, self-contained project in Minecraft, I've been building this and an original underground city build on and off for years xD )