EvangelionUnit, on 23 April 2013 - 11:31 AM, said:
I think that is something that can be decided as gameplay demands. Originally I envisioned both the torso and arm wiggling (either by running or jumping) the same amount, and in the same direction so as to not confuse the pilot. Although a good case could be made that arms are less subject to wiggle than the torso for the reasons you describe.