Tbh, it'd probably be inherently safer. The ship should be easier to control because the air at the top of a skyscraper is likely to be less turbulent. And if t

Tbh, it'd probably be inherently safer. The ship should be easier to control because the air at the top of a skyscraper is likely to be less turbulent. And if there is an unexpected down draught, then there is a lot more leeway before the ship and its compliment get smashed into the ground. Ground handling and docking is one of the main, and fairly frequently fatal, causes of airships accidents, see https://en.wikipedia.org/wiki/List_of_airship_accidents https://en.wikipedia.org/wiki/List_of_airship_accidents. Fwiw mitigating is definitely possible. But it requires specialised docking equipment to be available anywhere they are to set down. Which is why I suspect they'll make rather better Bazillionaire play things than humanitarian aid delivery mechanisms. They are very cool though.