Like College Football, MLB games have gotten to be too long. I rarely feel like watching a game knowing that I won't see it through to the finish.
They did nothing to address the pace of play. I simply don't understand why there isn't some sort of communication between the dugout and the pitcher/catcher/fielders on which pitch will be called (hello Apple watch). If football can have a speaker in a helmet, no reason baseball can't figure something out.
Also, any mound visit (by a manager, coach, or a relieving pitcher) is ridiculous. Just play the game! Pitchers don't need 8 warmup pitches each inning.