@Windy_Skies, you suggested a rope drive (your sketch below) for several methods including laddermill. Indeed rope drives have numerous advantages of which the possibility to connect the fast crosswind flight to the generator, increasing its rpm compared to yo-yo systems for example.
This is a rope drive transmission on the ground. However if this rope drive is airborne, and completed with ropes at the ends, would the resulting system be more or less close to what you envision as “another laddermill concept”? If yes, how is it possible to solve the issue of required “rigid frame” such like @tallakt evokes?
My feeling is that a rope drive would be suitable on the ground to benefit from the “earth as spar” (Dave Santos’ concept), in spite of some possibilities within a laddermill, in spite of the successful @Kitewinder’s device.