When you find the answer what will it resolve? Do you think spin rate is "teachable?" Is this something that is currently out of our control? We don't even have a good understanding of how spin rate impacts a FB. There are SO MANY factors which many are uncontrollable. Between weather, humidity, moisture content in the leather of the ball, seam height, not to mention the lack of repeatable mechanics from the human. Between finger pressure, release point, axes of spin, arm speed, forward momentum, and etc....
As a living creature we are constantly adjusting. The human factor for both the hitter and the pitcher are so difficult to understand.
While I find it extremely interesting, will we ever have a good enough understanding that it could impact the success of an individual pitcher?