I totally agree, and have wondered why stan's serve hasn't been the subject of more conversation.Henin used an abbreviated motion, obviously, which was different than the beginning of Fed's motion. Also Fed was a lot like her in that they both are lithe and great movers. No way Stan can move like Fed. Imagine Stan doing ballet, not a great vision. Henin, like Federer, was a one in a million athlete.
Also, people like to list injuries yet never mention Fed's back injury. All tennis players get injuries, tennis is truly brutal on the body. However, there is just enough tilt on Stan's serve to avoid serious impingement so far.
You can also ask Djokovic about Stan's serve. One of the great things about tennis is that techniques are proved out on the court and if you're defeating current and former world #1s we must acknowledge the serve's effectiveness. Perhaps when you're looking at slow-mo video you forget to look at actual results. Stan has made over 21 million dollars in prize money with that serve of his and the geniuses on the board tell me it's no good.
Stan turned pro in 2002, surely the devastating injuries involving his motion would have taken place by now, so there goes that theory.
You should learn from Stan's serve rather than be closed minded.
My serve was strong a year ago, when I just served the way my body wanted to, but the more I've read and the more youtube vids I've watched, the worse my serve has become, to the point it is my main liability IMO. When I just served in a very simple "roscoe tanner" type way, the way I naturally wanted to, I seemed to be able to bomb down strong 1st serves at a good percentage. Now I am lucky to get 1 first serve in outta 20.
Point being, whether you like it or not, you DO have to work with your own physiology.