I understand the theory of metrics, but consider it more a counting tool, per se. Baseball people have known for years that if you hit a baseball at an, to use a Dan Gladden favorite, "elevated" angle it will go further, maybe into the seats. If you hit it too elevated, the SS catches it. We used to call those pop ups. . If you hit it really hard and flat it will find the ground faster and raise you BABIP or whatever. And if you hit it on the ground most of the time the pitcher will be happy. But. What comes first, the chicken or the launch angle? If you hit the ball at the right angle, and have some power, you get home runs. If you hit home runs, dollars to donuts says your launch angle will be higher than if you hit ground balls. But the bottom line, is if you TRY and raise your launch angle, you will likely hit more home runs. And you will likely strike out more often. Will the end justify the means? As Sherlock would have said, Therein lies the question.