That airborne pulley will never convince me. Any airborne structure should be rag’n’string™ or carbon fiber flying at high speeds.
I am attaching the straightforward solution to this. I have drawn only one kite but there should be several. If each kite has two tethers attached to the “carousel” they may also depower automatically.
Also to make much sense the kites should spread out to either side.
wind blowing in this direction