You don't want too much seat movement because you don't have radial g holding you in the seat. With a monitor it's not as good but with VR a little motion combined with the world view changing is very convincing.
For flight sims motion is perfect for helicopters since its mostly low g and right side up. Feeling your balance point makes helicopters easier to fly.
Driving is the most developed motion experience and the combination of VR, FFB, and motion is just amazing.