I have a lot of categories on my forum, some of them are active, some are dead. I agree with @codinghorror that there’s shouldn’t be too many categories, specially when there’s dead categories mixed with alive together - it creates a meeting on graveyard atmosphere, noone wants to go there. But I don’t want to delete old categories, it’s a history of my community. My forum is about games, so people like to go back time to time, read old posts, see screenshots with old victories and nostalgy. So what I’m planning to do now is to create another Discourse forum on
old subdomain and move old categories there manually.
It would be awesome if there would be easier way to move dead categories from main categories page where users can access and read old stuff. Maybe by collapsing them in some sort of spoiler? And it would be even more awesome if people could resurrect old category from archive by starting an activity there. Maybe someone could make a plugin for this?