Its interesting to hear everyone's observations. I share some of them - sometimes I can be left with the feeling of "what am i supposed to say in response to that?", when I'm confronted with a non-standard call out. Similarly, there are made up SOP's, stuff some would call "custom and practice", and I'm sure we could have a whole separate thread on that...
I don't like that feeling of uncertainty, of "what have I missed", or even of "what does this guy want me to do?"
So, a plea, if I may... If, as a Captain, there is something that you feel strongly about, something that irks you, something you find people doing that you think is superfluous, or something that the SOP's omit but that you think airmanship demands, please brief it. The chances are that they picked it up from someone else who felt it was important, or he or she was trained that way. So set the tone, and let your mate know what is expected of him or her. If they're anything like me, they'll respect you for it.