Why not trying reeling in SuperTurbine ™ style?
Yoyo system comprising a ground station (6), a main tether (5), rotors (1) on their respective tethers (2). Said rotors (1) provide thrust. The separators (3, 3’) allow to avoid collisions between the rotors (1), so allow to maximize the space even by using small elements like the small rotors (1), avoiding mass penalty. A kite lifter (4) provides a permanent lift.