An "Active" suspension would set its self up for the part of the track it was about to encounter.

I think the true term for serpents system is "Reactive"

The suspension "reacts" to the position of the rear arm.

If I remember correctly this is what schumacher used on the front of their 2wd buggies.

It reduced castor when the suspension compressed so that the car had more off power steering but it added castor when it extended to give more on power steering.