Based on the ealier debate at Topic Title Flair - or something like that?
I will here illustrate the topic flair/type feature.
Tags are good for grouping the content a post is about.
Topic types are good to group the type of posts.
In a minor active forum - tons of sub forums may be a structure killer with many half empty subforums (forums with no a rare activity). For this purporse topic types may be a solution.
When posting a new topic it could look like this
In the forum list it could look something like this:
I hope someone see the benefit and will take the challange to make something simular…