I don’t see the “helicopter” ever doing much. The motors just don’t have enough power to lift a heavy machine much less any meaningful payload. They might work as artillery observation spotters but won’t ever do any real work.
(I’m channeling my inner de Severksy)
The science is “settled,” henkster. That helicopter thingy will never be anything other than a rich man’s toy.
There might be a SAR niche they can fill.