Regarding awesomeness, here’s a bit of a clue: despite many decades of experience with balloons and skydiving, no-one has done it before.
That is because those that have tried, since Kittinger, have died.
“Note the qualifier: a former Blackbird SR-71 pilot, Bill Weaver, is the only known person to travel at more than Mach 1 in the Earth’s atmosphere and survive, in just a flight suit. But it was an accident, not a deliberate jump. Weaver was forcibly ejected from his damaged plane; his copilot died in the accident.”
some info about Kittinger’s first attempt:
“Kittinger’s first jump, on Nov. 16, 1959, nearly ended in disaster. He jumped from 76,000 feet, but his parachute malfunctioned and opened early, catching on his neck. He spiraled and lost consciousness, despite wearing a specially designed pressurized suit, and was only saved when his backup parachute activated at 10,000 feet. (Unofficial estimates for the G forces he experienced were on the order of 22 times that of earth’s gravity.) Undeterred, Kittinger jumped again one month later, from an altitude of 74,700 feet.”