So I have a couple of suggestions, but beware that this is just my opinions and should therefore not be regarded if there's a overwhelming opposition to it. Just basing it off my previous "forum experience"
First off, if you can introduce some sort of colourscheme of some sort for nicknames so we can easier see which usergroup a user belongs to (like members, moderators, admins, that sort of stuff) that'd be nice. It's hard to tell sometimes, especially when one's new.
Good suggestion, Emil. (Um, wait. Aren't you supposed to be on the opposite side of the proverbial fourth wall? I'm confused.
)
The truth is, we don't have a lot of different user groups yet. There's exactly one admin -- Eich, all hail -- and three assistant admins/content moderators: Noako (who, regrettably, seems to have gone missing), Hushpiper the Slayer of Silence, and me, a Skald. (Which means I can do some content and thread stuff, but not mess up the forum technically.)
Everyone else here is a member. We do have ranks based on post count, which I'm sure you've seen -- Newbie, Safe-Zone Citizen, Scout, etc. -- and those are displayed by name and square count at the left, by your Forum name and icon.
So I don't know if there's much need for your suggestion just yet. Who knows, though -- a year down the road we could have thousands of members and spin-off sub-forums stretching from here to Kastrup, and therefore a sore need for more user classification.
Meanwhile, do keep those suggestions coming!