Closed Curves and Follow

Well I am not a programmer so not sure if I will describe my thought well but here goes. It might be interesting to have a "Use Shape as Curve" (using circle, polygon, ellipse or some other closed curves and then simulate extruding along a path. So you could use Techno, for example, to generate a path for some pipes and a Closed Circle or Polygon curve would follow this to render realistic pipes, jewelry, veins, towers and other things. I guess you could also create a path component that would take noise and other components and render out a simplified path to do this if that would be easier on the rendering.