One thing that i'd like to suggest is to be able to "seggregate" parts of this forums depending on the game.
The backend would be the same, but like saying I just want to follow Arma Reforger posts or things like this, it would be nice to have a UI for following these easily. I know i can edit queries, but this mean having to edit a bunch of them and its not very practical...

Oh and being able to upvode/downvote some comments/posts would be nice.