What a great post. Rod Carew shortened his swing by making his bat have less distance to go to generate batspeed. Minimal stride, explosive short quick hands with barrel to ball. You'll eat for a career. Simplify your swing, folks.
Anytime the top of the bat almost points at the pitcher during stride, thats a long way to go to catch up with velocity. Abbreviate the load a bit. Get him to think thru the centerfield wall, not over it. That will allow front elbow to go more directly to the ball. He has a bit of an arm bar (straightening) of that elbow, which also is slowing him down. Hope it helps…