Fastball pitchers are at a disadvantage - their pitches don't broaden so much and are easier to hit. Only 300 lb. The pizza-pie catcher's glove makes a comeback. Unfortunately, a reduced-mass correction must be applied.
Bunting is now difficult in the extreme.
Skilled hitters have an instinctive feel for swatting at the waveball, although even perfect contact occasionally results in a swinging strike, due to tunneling of the waveball through the bat. Less skilled hitters often blame their failures on tunneling. When a waveball is hit squarely, you can hear a loud crack, and see the waveball suddenly become sharply outlined before it whirs out into the playing field and becomes broadened again. If the ball tunnels through the outfield wall, it's a ground-rule triple. What used to happen only in Wrigley Field is now a regular occurrence in all the parks.