[Yoda]

Doesn't hip-slide cause secondary axis tilt? I know Homer stated that the rotated-shoulder was primarily for low power and "shiftless" strokes in the 6th edition; did he changes his tune or are there other "shiftless" forces at work -- only a true Jedi would know

Yes, tobell, and that's the problem: The Rotated Shoulder Turn mandates the Shiftless Hip Turn. And no Hip Slide means no Weight Shift (and low Power) and no Axis Tilt. And no Axis Tilt means no On Plane Right Shoulder in the Downstroke (unless the Waist Bend is exactly right) and, also, no possibility of any of the Straight Line Delivery Paths.

Now, a Rotated Shoulder Turn Backstroke can be replaced by an On Plane Shoulder Turn Downstroke (complete with Hip Slide, Weight Shift, Axix Tilt and Line Delivery Path). But then, it is no longer a Rotated Shoulder Turn.

Bottom line for me is that I would have to see the revision in Homer's own hand.