PS. Don't tell Lu, but Frank Robinson used the 'G' word when he said; "an aerodynamic moment on the rotor disc is required to overcome the gyroscopic inertia of the rotor."
pssst, Dave. I think he knows.
Dave, reference your initial post, the downwards flapping of the forward blade and upwards flapping of the aft blade will result in angle of attack changes that cause the disk to roll right (ccw system). Unfortunately, I think it is inaccurate to state that "...
if no lateral cyclic is applied, the rotor disc will have some lateral tilt while the rotor disc is tilting forward" because that indicates this effect (don't know if it's weewa) has an end result of a laterally rolled disk. It seems clear this effect puts in an input, but there are many other effects going on.
I think the best way to deal with this is to flight test a simple system.
Matthew.