OK, that sounds reasonable. The Associated droop gauge (that comes with the TC3) measures the distance from the chassis to the a-arm tip (in Z, vertical direction). It's like a basic ride height guage (stepped), but from measures from the chassis.
Definite affirmative on left to right symmetry.
Now what happens when the front to rear up-travel is significantly different? If the rear has more up-travel, does that transfer more weight to the front under braking (loose under braking)? How would that effect the steady-state lateral behavior (push, front wheel lifting?).