I just have this idea, you know how irritating it is when someone sends you all these spam invites right? Well I just thought about something...why not make a "GCD" for invitations? You could invite a person to join but you can only send one invite for every 5 seconds. That way players who are busy, EXAMPLE: doing PvP, or maybe chatting with a friend. Just a suggestion, I think that would help a LOT!