Is this really needed? I've played Wow and I've seen how the guild system works there, what you're suggesting is annoying as crap honestly..in big guilds it's constantnly beeping as people log on or off and on small ones it's a non-issue. It's ok if your used to it on WoW but players here aren't and it's obnoxious, if people want to tell you they logged on they can say so if they don't why does it matter?