This is something I'll be looking at for a future version to be in the stock code. The one stumbling block in my thought process on this is how to determine which flag to show if the member belongs to 2 groups and both have an image associated with it.
Say, I'm an admin and I'm also a member of Group A which has a gif associated with it. Do I display the admin gif or the Group A gif? One option is to display both, but that could get messy as some sites have users that belong to a large number of groups.
