So that we could create special mall-type streets, these signposts would only connect with eachother. It would be even cooler if there could be some kind of central area that would lead to multiple towers as well. But I don't know how TS'd do that, because it seems like they don't want and/or cant accomodate in game locations for housing, and this is sort of a similar situation. I suppose it could be structured differently and be something you have to pay for that not everyone can have, or could be an infinite series of same-looking halls that you can either walk between or choose from a list and teleport to from an outside signpost.