The limits of the hydraulic system is set to not overload the strenght of the rotor system to protect it from damage if the helo is operated outside the envelope.
Servo transparency
After their hydraulic flight control system killed numerous people due to this occurrence they would say that wouldn't they!
Perish the thought we under designed our flight control system and and then cause the aircraft to crash killing the occupants because we did not wish to over stress a rotor blade or some sheet metal and rivets.
Why is it all the other helicopter designers seem to see the exact opposite way?