Yes, by connecting the gyrokite to the rod (9) settled around the line (3) with a hinge (I think you suggested this mean, but I am not quite sure), a little like on the video below:
The other issue is more complex and I am far to have answers on all points. If complete gyrokites are not used, so if rotors turn around the line (directly or via fixed rods) the lifter kite will supply both elevation angle and stability, that according to its area compared to the area of the rotors, as for Daisy.
And the curvature of the line will lead to different AoA for each rotor, perhaps without too serious consequences in regard to their respective pull.
On the experiment I made with 6-8 m/s wind speed the (perpendicular to the line) rotor turned fast, looking stable (partially thanks to the gyroscopic effect), then stopped when the wind was weakening.
I will experiment with three rotors under the same small lifter kite. Perhaps they will fly at a very low elevation angle, below the 35 degrees I obtained with only one rotor.