Dutch roll as I understand and have had it on BVM Bobcats and KingKats in crosswinds are effectively dealt with a gyro on the YAW axis or rudder channel. Full 3 channel axis gyros as you beilieve you need are available now in quad copters and flybarless helis. Then their are two types of gyro correction, heading hold or yaw dampening.

Do we need to go further, just ask. I am a heli pilot well versed in gyros for 26 years, as well as jet jock for 12.

AMA26390