In spirit of the question, I think the forum could use some technical work. I couldn't care less whether it changes.
This forum isn't really all that hard to moderate- Luna crafted a good forum, and it has come a long ways since before she was around. I can't really think of anything I would add or take away from the forum. Maybe the "mute" feature that has caused grief in the past. This is one of those great places you make, and just let it go- I can think of a couple things I would add, simple litlte interactive games. A way to upload photos directly to the site, that is anonymous- so that we don't have to use external sources; as well as video.