Thade are you serious? You guys disabled joining friends who are in the same guild? Was this because of people joining friends not in the same guild? Why can't the button just disappear for people not in your guild? Please don't penalize those who only used it to join their own guildmates.

Although for some reason I once saw a level 2 who was not in a guild and he was in the ROM guild hall for about 2 minutes. Didn't say anything, just left.