I still think it's about the same as the marvelous idea of having blimps hovering at the ramps, lifting the aircraft.
No more taxying
No more runway friction.
No more runways, come to that.
No more runway length limitations, the aircraft can continue to accelerate until it reaches flying speed, and only then disconnect from the blimp, which returns to pick up the next aircraft.
Oh, you never heard of the idea? No wonder, I just thought of it....... honestly.
CJ