Even the best mechanics + conscious action is not comparable to good mechanics + untentional action, especially happening as a sequence of events where one element follows another because there is no other way. Let me take as an example pelvis area motion. There are three basic possible scenarios for pelvis movement in a rotary golf swing performed by a bipedal (not mentioning scenarios of hip sliding back and forth):
a) the rear hip goes consciously as far back as possible in the takeaway to ensure enough deep position of the rear hip to exclude the necessity of lateral shift later on in the swing (see: Clement's "Hogan" drill);
b) the lateral shift happens at the end of the backswing as one of consecutive unconscious events ensuring that the downswing is a pure rotation (see: Hogan);
c) the lateral shift happens in the downswing phase as a conscious action starting it (see: Stack&Tilt pattern).
In view what was written before, the serious advantage of the scenario b) is undoubtful.
According to my researches (not only mine, BTW - such authorities as e.g. VJ Trolio even wrote a book especially about it), Hogan's pelvis area action is one of his "secrets". His pelvis moves linearily targetwise before he completed backswing of his upper body. IMO, the trick is to be able to do it early enough so that the downswing can be a pure rotation.
Pre-secret Hogan did not perform his linear shift early enough which resulted in a necessity of mixing linear and rotational components in the motion which is easily visible on some vids. Many other differences between and after "the secret" might have been caused or at least influenced by it.
Hogan wanted to have his linear shift to happen as early as possible so that the downswing is a pure rotation while the weight is located correctly under the lead ankle. The linear shift symbolizes for a bipedal that there is no possibility of coming from the outside - while he had it 100% guaranteed what he wanted ? A rotation. An OTT move. So that he cannot hook the damned ball. He wanted a pure rotation that puts his clubhead more OTT onto the ball without any slightest possibility of slicing and power leaking - because he was so in-to-out just a second before rotation element and after linear element.
He was an unique genius.
Please watch the visualization of the SPC concept in the pelvis area:
And now a pure pleasure to see Mr.Hogan in action. Observe carefully Mr.Hogan's rear hip action. It moves linearily targetwise before he completed backswing of his upper body. It is not a conscious move - there is no time for it. It is either not a result of the deep rear hip takeaway - the hip move starts long after takeaway. It is a reaction of his pelvis to the torques that have been built thanks to creating the firm rear side sequentially from the ground up. The torques in the ankle and knee joints that cause the rear femur guide the rear hip joint the only one way - the way Mr.Hogan wanted. Observe how the ankle and knee joints release the tension (torques) just the moment the hips go linearily.
As said before, the linear part in the pelvis area must happen since humans are bipedals. The trick is to be able to do it early enough so that the downswing is a pure rotation which was one of Mr.Hogan most crucial secrets how to automate the motion and make it powerful enough independently of one's body build and individual strength.
