I would suggest a little big feature that are in my opinion very useful. In an italian forum hoster (based on ipb 1.x version), you can create in the footer the list of the groups of the forum: admin, moderatore, premium user, warned, banned etc., with a special color in the online users etc. See this example: http://bit.ly/93K4m2 The admin has this group: http://bit.ly/9oKlH1 , in this link you can see all the users with admin privileges, with a description of the group, the privileges etc. In the home you can see the others groups...Is very useful for a new user to see a little description and the list of every group in the forum and the "important" users. With the possibility of creation of "publicly viewable/private" groups, i think it's a nice feature, or not?