There we go again! You bash about the amount of loss to squeeze some hope from your arguments, Dave. The losses in this case are what they are, about the same for all configurations, no matter how you try to squeeze them.
I like your use of Gareth Padfield's book as a reference, since he and I worked together on several panels and papers. Gareth is one of the foremost authorities on how to use digital controls to improve the handling qualities of aircraft, in spite of the ideosynchrocies of their rotors. He would laugh at an argument that proposes developing a whole new rotor configuration purely to derive some improvement in handling.
I would also derive some eenjoyment at a guy who has, as his best arrow to shoot, a comparison between the Flettner and the R-4! Dave, you are as stubborn as Lu, and as likely to admit you are cornered!