Whenever I need to relocate a few steps at double quick pace, the weapon is automatically switched from At the Ready to Shoulders Arms. For longer movements that would be advantageous but for small movements, it actually impedes firing by 1 or 2 seconds with the shoulder arms animations.

While you can charge with weapon at the ready, I would like that for Double Quick, with Shoulder Arms posture optional (sure, desirable if you wish to conserve stamina etc, but optional).