Has MMO-Champ ever tried it? Blizzard used to have a separate Guild Leader forum, but since the new website has come about, the forum is a Guild Leader/ Raid Leader forum, so things get fuzzy, and don't always have anything to do with leading the guild-since there are many leaders who keep the 2 separate.
Just putting in my 2 cents-- I'd love to see a forum where guild leaders can chat!