[0x_rs]

Lighter-than-air is still largely untapped territory today, and it's a shame because it should scale in size very well. Without going straight away into more ambitious projects that were fantasized the past century [0], I'd love for a resurgence of it.

0. https://en.m.wikipedia.org/wiki/Cloud_Nine_(sphere)

[masklinn]

Tons of companies over the years have taken a shot at it (CargoLifter, Aeros, Walrus HULA, HAV).

Turns out, so far, it's all been pretty shit, because outside of super specific niches airships are so slow they need to be much cheaper than aircraft, but the upfront costs to create massive-enough airships to even have a chance makes it a difficult proposition.