Looks like it has a good future.
Low power/unit lift (not as low as helicopter for vertical lift) but fwd speed not limited by upwind rotor tip-speed
It will autorotate at about 3:1 glide once the motor is declutched.
VTOL version capability proven
What happens if the rotor seizes/stops is the question (for full-sized and manned flight), but this hasn't inhibited adoption of helicopters, lose the rotor, lose any lift... it may be that a degree of stalled but controlled descent may be possible.