I agree with Bruce and noticed the same as I was getting my group setup for launch last week. Hopefully adding on (versus being a non-sequitur) to that point with this but I'd like to suggest some basic logic be coded in to allow situationally-specific member notices.
As an example, I realized early (after getting help on the GMF group) that you can only have one notice "active" at a time else any new member will get more than one email upon joining (assuming you have 2 or more notices and at least 2 are marked "active"). Ideally, I'd have loved to haven been able to "if/then" those notices. I.e., a new member who'd been directly added would receive a notice starting:
"Hello and welcome! You've been added to the XYZ listserv..."
Versus a new member approved via their request:
"Hello and thank you for requesting membership to the XYZ listserv. You have been approved and..."