I would like to see the option that threadprefixes are only usuable by moderators or specific member-groups.
Say for example there's a request-forum.
Somoene posts a request.
And then teh mod can set/update a prefix to it saying something like "accepted".
(instead of the current situation: a member can set that prefix already by himself

which ain't the right way)
Also, it would be very nice to be able to use images instead of text.

it just hit me: Can I set those prefix-HTML-markup to:
<img src="images/prefixes/{1}.gif" border=0 title="{1}" /> ?
But IF that would work, u couldnt' use text prefixes (in other forums) next to it