I got that hat too. I'm with you on #3. . . BUT what about Hinging Swivel? And Uncocking? And didn't Mr. K say . . . "If people had a flat left wrist they would break 80 tomorrow?" The Flat Left Wrist is . . . Imperative Numero Uno.
The Flat Left Wrist through the IMPACT INTERVAL is the really critical alignment. It would be nice to have it FLAT during the entire stroke, but it does not have to be to play well. Fred Couples, one of the best ball strikers ever... proves this, but his LEFT WRIST does flatten somewhat through the IMPACT INTERVAL.
Clubhead Lag is sensed through the #3 Pressure Point. When you get a handle on this... you have cornered the "secret of golf."
The only time I monitor the other pressure points is when they are misaligned or thrown away. By then it's too late, but at least I know what happened. Otherwise they just feel the dead weight inertia of clubhead lag. If I lose that feel, it's hit and hope.
There is a normal passive lag "dead weight inertia" associated with the downstroke. So with #2, while it's downcocking as it is released, I feel that the clubshaft stays inline with my left arm. A solid feel with #2 makes the clubshaft feel like it is an extension of the left arm through impact and into the finish. Again, monitoring is about losing that feel, not creating the feel. The feel of Dead Weight Intertia.
There is no intentional swivel to worry about other than the startup. If I executed good, on-plane Rhythm, the swivel takes care of itself. Most of the time when swinging, all I'm concerned about is startup swivel because I want Horizontal Hinge motion through impact. There is no intentional hinge action roll or swivel on the downstroke.
So all I'm concerned about is in the above post. Hinge action is planned at impact fix, verified by the waggle, and is visualized on the downstroke as a follow-through/finish position. Particularly with vertical hinging.