Given the very low SFC of most drones, surely external tanks would be simpler?
That said, nothing is impossible and computers can make far quicker reactions to basket fluctuations than a human - it just takes a bit of R&D.
A 'bit of R&D', eh? Ever had your Windows PC freeze or crash? And Bill Gates has been in the computer game for
far longer than any drone designer....
Particularly one from BWoS...
...such as switching to "lost link" modings
If I recall correctly, that's what early model aeroplane 27 MHz proportional R/C systems did in the mid-1960s. In the event of loss of signal, everything to neutral and throttle to idle - hopefully the model had sufficient natural stability to glide to a soft landing.
But usually it didn't work. Mind you, the far more common servo hardovers caused by radio interference were much more interesting to watch!