One small detail that would help is if posts that were marked as "sticky", "closed", or "resolved" didn't show up in the No Replies view. It'd be handy to not see those when I'm looking for questions to answer.
I'm looking forward to the email notification that I assume is coming when the forums are upgraded to bbPress 1.0.3?
It would be sweet if I could set it up to automatically subscribe me to any thread I post on. Right now i am adding every post to my favorites manually and subscribing to that in my RSS reader. What I'd really like is an RSS feed that just automatically included every thread I posted to.
I think the modlook tag is too obscure, making an actual button that added this tag would be great. Even better would be a few tags/buttons for spam, double-post, OMG BBQ, etc...
We definitely need to encourage more people to get involved. I try to answer at least one question every day, but it pains me to see so many questions go unanswered.
Anything that could be done to silo the different forums more. I mostly stick to answering questions about themes, and wading through plugin dev and end user questions can get to be a headache. But getting people to actually post in the right forum can be tough. Maybe some icons or pictograms? :)
While we're throwing out wild ideas, it would be neat if we could embed WordPress.tv videos. Sometimes I have a hard time getting people to go and read documentation or a blog post. If there was a video clip right under their nose with the info they needed maybe it would be more effective.