It is natural to be skeptical of any device that has authority over the collective.
One does not wish to have the lift dumped while at a low altitude.
On the other hand if the collective is not lowered in an emergency, the rotors will slow and no good will come of it.
Perhaps the best thing would be to have a black box with enough smarts to know when to execute a cyclic flare to regain rotor speed versus when to lower collective.
It would have to know radar altitude , airspeed, rotor speed, vertical speed, heading, etc.
It would need to have control over collective, throttle, cyclic and anti-torque.
The pilot must be able to overide the sytem at any time, instantly.
If the system can be made reliable and reasonably light and inexpensive then it probably will be incorporated, just as the throttle governor has been made standard on the R22 (and on all turbine ships.)
Electronic flight systems are being developed that have astonishing abilties.
These can seen in small pilotless vehicles
that can fly themselves.
A Japanese helicopter designer has built a control system so adaptable that it can deal with the loss of a blade in flight!
No human pilot can make those calculations and millisecond responses.
At some point down the road we may not drive our own cars or fly our own aircraft.
We will strap into our autonomously controlled syncopters and read the newspaper while being delivered to our destination:
The Soilent Green production facility!
Floyd