Graviman,
Nick is obviously correct. Forget the 'loosy goosy' things. Future rotorcraft control will be electric and electronic. However, the electron should not be used to mask aerodynamic problems. It should be used to effect aerodynamic solutions.
Why can't linear induction actuators be used in place of hydraulic ones? Double or triple redundancy will provide a very high safety factor. There are also the advancements being made in piezoelectrics.
Some predictions for the not to distant future;
~ Rotors will be powered by electric motors.
~ The use of an electric disk-motor will eliminate the need for gears.
~ Dual main-rotors will have a separate motor for each rotor and the inter-phasing of these rotors will be maintained electrically by encoders.
Heck, all of this could be done in an R/C today.
Then light-activated actuators for fly-by-light.
Dave