>>716008736they almost did
i poked around the files in godot just to look for interesting stuff, and ending up finding a tent prop, a whole unused tent zone 'dimension' very similar to the shop and aquarium that just looks like a box of some kind, and some code which implied the tent prop was supposed to work similarly to an island flag, im halfway sure.
the tent dimension kind of exists in the game, but you have to propfly towards it and its fully invisible. i tried propflying to see what it was like and it was just a piece of flat ground as far as i know.