So let's say you get a 2.5m container full of structural parts (girders, panels, windows etc.) and fly it to mun, eve, wherever. Your kerbals could then open up the container and go through a UI menu to choose which structural elements to take out of the container and place. You could then choose the orientation of the object and where to build it, so you could build yourself a nice room to store spare light poles, or a garage for your rovers, or possibly ramps to assist take off (or for just dicking about!). There could also be a way to create airtight structures with airlocks and such, to allow you to grow plants and/or livestock to really advance your little colony on a far away planet. It would also really allow the player to make more complicated bases, as components could be moved around and placed with precision, not with just rocket or wheel power alone.
