I don't know how many of you subscribe to The Athletic (if you're a sports fan, you really should) there's a great article looking at the shift and presenting compelling arguments for why that's not the real issue that should be addressed:
https://theathletic.com/703736/2018/...s-strike-zone/
If you don't subscribe, the super-condensed summary is data shows shifts don't seem to be impacting the rate of balls in play falling in for hits; the real issue with pace of play and hit frequency is strikeouts, and the best solution is to raise the bottom of the strike zone.