I am not convinced that there will be enough people brave (daft?) enough
to use one of these for personal transport.
However, in principle, it does look as though it can be made into a
stable platform. Some electronics to control engine speeds to keep the
platform more horizontal shouldn't be too difficult. This prototype was
capable of lifting the weight of a substantial seat and a human, so it
could become a remote controlled crop sprayer, or a means of rapidly
delivering search and rescue dogs to an avalanche, or other similar uses
that rely on it being airborne.
Edison's first light bulb glowed dull orange and we would sneer at it
today, yet look how that prototype got improved. Yes, this demo looks a
bit simplistic, but I reckon it has potential.
Jim