A guild should be able to construct its own station in any empty sector
it would involve a massive amount of work
think 10 capships worth of commods

the guild station would, once built require continuous maintenance
repair beams supplies etc

and if not maintained would be destroyable by other players

With that amount of grind, they'd all look like the station in Edras J-3

Unless the game engine does not allow it, I think multiple player built stations should be able to be constructed in a single sector. A large organized guild could then make a stronghold sector that way.

the dis-repair mechanism is an interesting idea and i will +1 it. (though i would totally hire some caretakers to do that for me)

^^^ Space cities!