Dave, a L/D ratio of 2.4 for a round SS pilot kite flying at a high elevation angle of 67 degrees is given on
This L/D value ((2.4)² = 5.76) is not too far from NPW value. Practically I agree that such a value could lead to a significant power, even considering it is lower that the values you indicate (above 8).
So with such a value (L/D ratio = 2.4) you could plan an efficient giant AWES. Now you have imagined several ways to produce massive energy. It may be more appropriate that you go deeper into a single system, for example the Fractal 3r Dome, by trying to build a set of small dimensions to test the different ways of making a network, then a larger set, and so on.