Hitters have gotten much stronger and that has affected pitchers' approach. I don't know if it's still on the highlight page, but O'Neill Cruz hit one out to the opposite field over the weekend and when he left the batters' box, he thought it was an easy play for the LF. He looked as shocked as anyone when it went out. Pitchers used to be able to work outer half on power hitters in hopes that the batter would still try to pull the ball. That doesn't work anymore as strong guys with decent launch angles can deposit those pitches to the opposite field.
Velocity and spin rate are the surest way to get swing-and-miss.