I was thinking about the same, that\'s why I\'m working on a modular station with an extremely simple and fast to build core design, which implements docking units for larger, premade components that can be brought to the station\'s location as ship (or onto a ship, if you don\'t want any thrusters on them) They are then permanetly left with the station or, which makes it even better, can detach and be mounted on another station.
I\'m experimenting with the idea, but it would make for very versatile and custumizable on-the-fly stations which could be shifted towards one role or the other depending on the changing times.
Since the station core itself costs a million, I\'m realy working on making it worth. Working on an orbital mining platform using this method, with 4 gigantic harvester ship-units who just take the planet apart. Once they\'re done, the station can easily change modules and become some more defensive outpost, since the planet is then depleted and gone. That way, it still functions even when its original purpose is lost.
Well, it\'s just an idea I\'m slowly putting togheter.