"Joining a Conversation"
If you are an AM or CM/CA then you might wish to introduce yourself?
"When closing a UR, please leave a message as to why you are doing so."
unless it's obvious?
maybe something about refer app issues to the support page/forum rather than try to help over a map conversation?
Not sure I agree about keeping replies short as some at least will be reading via email but I can see the point and won't press it.