It is in my world. Lower it and the roll moment increases. Raise it and jacking is increased. Raise it or lower it and the camber curve is more aggressive which could or could not be beneficial. Putting them parallel is a good compromise. A rule of thumb is to run the longest virtual swing arm you can. One would have to test if raising or lowering the roll centers would be of benefit. i.e. the car is quicker with more roll as opposed to more jacking and the reverse. With mine set parallel the front is 1.2 off the ground and the rear is 1.9. It seems one would opt for lowering and controlling the roll with bars or springs provided it did not ruin the camber curve and or mechanical grip.
I can't see how adding jacking could ever be good which is why I never opt to raise them beyond parallel to the ground. That said, the 26.5 tires have not helped me
chr