no. the shoulders and arms are along for the ride. the hips and core powers the swing. I would not teach shoulder rotation at all. if you rotate the hips properly the shoulders will follow.
teaching the shoulders to rotate purposefully will usually lead to pulling the head off the ball and an upper body dominant swing. that's why any MLB hitting coach says "keep the fron shoulder in (or closed)" although that doesn't reflect reality of course.
I think walks are overrated unless you can run. If you get a walk and put the pitcher in a stretch, that helps, but the guy who walks and can’t run, most of the time he’s clogging up the bases for somebody who can run. – Dusty Baker.