It's a good point about the clubhead not moving at transition while everything else initiates then starts toward impact.
Golf is a game of feel. If you have this clubhead delay, it gives your brain quite a bit of extra time to feel the spacial awareness of the clubhead AND the clubface and a good player can intuitively make any last second corrections much easier than if the clubhead just starts down the instant any change if direction takes place.
I have always felt this when I have been playing my best especially in competition. It's one of the real secrets of the game.
The superslotting move that I have been working on myself in the last year or so.... and also been sharing with some of the students that are interested in attempting it, is really powerful stuff...not just in concept but in practical application.
I've heard fellow pros call it "The God" move. It's not easy to learn, and completely counter intuitive to what one would think should happen, and the feel is extremely bizarre when first attempted. I literally spent a month topping, shanking, skulling shots.. and had to get a net to hit into because looking at those shots being hit was not too positive. However, the solid connects where definitely something special. A different sound, flight and intensity, as well as picking up considerable distance.
It took me about 6 months before I could harness the spacial awareness triggers to execute it consciously to properly hit shots and demonstrate it without it "coming and going".
The goal for me now is to implement it so that I don't know how NOT to do it.. regardless of how hard I try.
I call that swing DNA... when you really own it.
I started working from here early on... exploring the possibilities of forearm rotation through transition.
In the past I would often lose distance by flattening my swing, but by applying the superslotting protocols, I was actually able to gain distance by going flatter. It really confirmed why I left TGM concepts behind years ago and brought light to the difficulty and problematic situations that TGM forces one into.