Finally got some time to play with GH. This definition was constructed while I was on the phone, you know how we all tend to draw something... well.. here it is.
It's a very simple definition, operates just a couple of basic commands. It builds up on top of seven symmetrical nurbs, all the structure is parametric (sliders for everything), I will try to find time to look into paneling and more advanced def. I added the usual renderings and human scale, and made it some kind of a bridge between two imaginary points.