I am no designer but I have a gut feeling that this design from 07-08 came closest to what we are looking for. Ozone never made it bigger than 13m so maybe we didn't understand it's full potential. What I like about it is the high aspect, thin leading edge, flatness in the middle and still the squarish wings for half decent turning. And the key of course, that bridle at the end of the fifth to hold something like this together without buckling. Why they didn't make it bigger at that time I don't know. Maybe there were design constraints, maybe they could be solved now.