I've been working on moving my feet while hitting. When hitting a forehand, I'll either: (1) hit closed stance and hop approximately 180 degrees; (2) hit open stance and pivot on the ball of my outside foot while hitting; or (3) hit closed stance but allow my back leg to swing forward as I hit, so I end up in an open stance at the conclusion of the shot. On my one-handed backhand, I do #3. I incorporated these movements to help speed my recovery after the shot but they actually have helped my strokes.
When hitting an approach shot, I don't chip and charge, I hit a chip while charging.