I belong to quite a few forums, some of which have hierarchical labelling.. but I take so little notice of it I would have to go and check to recall what those labels actually are.. other than the obvious defining mods/admin

I really do feel a 'long service medal' system to be facile; labels should mean something specific if they are there at all

personally I think 'moderator' and 'super moderator' to be self explanitory, but I guess that depends on your background, and your perception of the meaning of 'super' in this context