Thank you Doug, that seems close to the 2nd option:
As you know, @Kitewinder developed with Kiwee, and with a certain success, something quite similar to a traditional wind turbine except for the rope-drive transmission with the generator on the ground.
I believe I remember that @dantmaui (Pacific Sky Power) has developed a sort of wind turbine suspended from a single-line kite. I remember also that Dave Santos experimented something similar. I myself have experimented with a FlygenKite with 2 lines but in stationary flight.
Perhaps using KiteX as a light wind turbine (but for strong winds) would lead to some possibilities.
In any case, a big lifter will be needed.