[danielnoiz]

I get that this is a concept, but why not use lighter-than-air drones? Either hot air (I'd see about an electric heater, no idea how feasible that is), or little helium blimps. Then just little fans to keep them in place, which could be quieter.

I think I mostly want to see little blimp/airship swarms be a thing that I could buy, given a lottery win or two.