As a Reformed Presbyterian, I believe in the Regulative Principle of Worship. In other words, we try to do things commanded by the Bible and leave other stuff out of the service.
The guy who first trained me used a similar admonition: Don't do stuff unless it is in the book.
Early on, I noticed guys point to bases as runners touched them, tell catchers a better place to receive a throw from the outfield, verbally and visually announce the number of outs about 412 times per inning, call time to ask a coach if he wants a courtesy runner, Chat chat chat with fans, and of course dramatically show and tell a new pitcher the 'situation'....
Almost universally, these umpires were quite unfamiliar with the rules...but they made up for it by doing a whole lot of stuff that an umpire has no business doing.
Does anyone want to add to my list?
Joe