[phrontist]

I've given it some thought, but I think the major issue would be controlling the pneumatics quickly. I'm assuming you mean some sort of active cancellation system, which detects swaying and adds pressure to the correct cylinders appropriately. If this is the case, I think you would have issues implementing this, as there is currently no way (that I'm aware of) to multiposition pneumatics over short distances or regulate pressure in cylinders.

If you really wanted to, you could attach a strip with black and white quaderature pattern on it to your pneumatics and rig up banner sensors to figure out their position in real time...

Seems like a lot of work/weigth/complication for very little benefit.