Great notes! I can understand the frustration level that such behavior brings MR BK....I deal with it every summer....and when I finally say something, the fools looks around like: "Who are you talking to? I dint do nuffin'."
Although this is NOT a solution to that problem.....when I am directing - or suggest to the director if I'm in a show - is make a CLOSED Facebook group for cast, crew, and staff. They pay more attention to FB than emails. You can post your NOTES there and SEE who has looked at them, and you can be sure that everyone sees any notice you post if you want to change your mind about doing something at rehearsal...or remind them of what they should KNOW for TONIGHT!!!
It's a great tool!