I think this thing holds WAY more promise than pep does. looking at those images again after seeing all the polygon laden stuff everywhere, reminded me of that.
At it's base form, yours is a free-form version of pepakura that permits you to create smooth arcs and layers, rather than polygons. It's got considerably more artistry to it (in terms of working out the design yourself, versus having someone else do all the modelling for you).
I think "the bomb" would be a marriage of pep and this method.. where you'd get some of the key elements pre laid out for scaling and help ensure accuracy & consistency, but large curves could be handled through your method instead. The use of layers greatly enhanced the overall impression, plus of course aids in the final smoothing process.