Hitters should kill the shift.
Players are positioned where they are from experience, I think. This was the best defense. Of course, hitters could eat up any opponent that shifted the way the Indians, and then everyone else, shifted against Ted Williams. "Analytics" formalized it, but Lou Boudreau didn't need math to figured out that Williams pulled the ball, and that Williams was too proud to hit to left. (Until Ted's last couple of seasons)
Current players seems to have trouble hitting to the opposite field, because pitchers are throwing, like hard inside, where it is tough to slap the ball. Or because, like Adam LaRoche, they can only swing to pull.
Of course, there is the old baseball slogan that "Singles hitters drive Fords and home run hitters drive Cadillacs". And maybe compensation is part of the industry's obsession with home runs and strikeouts. That is a problem for owners, a collection of greedy fools who cannot be trusted to know or learn or change.