Just two short comments conerning avatars and the rank structure:
Maybe I am the only one, but avatars really annoy me if the same people post several times in the same thread. This usually means having to endure the same avatars over and over again. Would it be possible, without too much work, to display the avatar only besides the first post? This would be enough to show everyone that you have joined the discussion without the drawbacks mentioned above.
Would it be possible to use different rank styles in the Trek and the LOTR sections? For example, when posting in the Narrator's Ready Room you are a Lieutenant, whereas your title in the Council of Elrond would be Lord, or something like that.