Here is a picture of the components in Dick Degraws rotor head.
Using this poor picture and the one on
Degraw Hummingbird somebody may have fun determining if the head is teetering, offset flapping, or both. The rotorhead must include lead/lag because of the cyclical Corollas effect between the two rotors.
IMHO there is no way to get an improved rotor-fuselage coupling from a 2-blade rotor (or a pair of 2-blade rotors) without generating a 2/rev vibration. However, since you seem to be interested in a gyrocopter and the gyro always has forward velocity, how about linking the tail feathers to the cyclic control? This should give a small amount of rotor-fuselage coupling. Come to think of it, isn't this how the original gyros were controlled?
Dave