So what's next on the wishlist for features? Is it editing your own posts? On second thought, it would mess up the rss-flow rather severe.
Quotations style? But where do you draw the line? At links, quotations, italics,... I do think at some point it will collide with your forum-goals.
What about people wanting to use your forum for there own, but lack the coding skills to extend it to their need/will.
I'm curious to see what more could be done with this forum, while still keeping it as simple as possible.