I'm surprised no one hasn't made a tagging system yet. I would like to request a tagging system where a user's can add tags to a topic when creating it. Then allow people to click on a tag which shows all topics with that tag, and search within topics with that tag.
Tags should also be permission based, meaning only certain groups should be allowed to tag.
Would also be nice to have a little script that we can add to xenPorta where it shows most popular 25 tags or something.