Some of these changes may eventually be instituted in the Major Leagues:
Minor League Baseball expands pace-of-play rules
The Associated Press, Mar 14 2018
Extra innings throughout the minor leagues will start with a runner at second base, National Association of Professional Baseball Leagues president Pat O'Conner announced Wednesday. The runner will be the batter in the order before that inning’s leadoff hitter. In addition, the pitch clock that began at Class AAA and Class AA in 2015 will be lowered from 20 seconds to 15 when there are no runners on base, The timer will remain at 20 seconds with runners on.
New limits on mound visits without pitching changes also will be added. The maximum will be six by managers, coaches or players at Class AAA, eight at Class AA and 10 at full-season Class A. There will not be any limits at short-season Class A or rookie leagues. An additional visit will be added for each extra inning.
https://www.nytimes.com/2018/03/14/s...e-of-play.html