The ability to add users to list's separated by group. With all the crazy stuff going on it would be helpful to be able to remember who is who. Maybe with a user defined flair next to their username on their posts and comments.

I don't like blocking views I don't agree with but would like an easy way to see at a glance what kind of person I'm dealing with and make it easier to see patterns in their discussions. If they were to be overly annoying, arguing in bad faith consistently or just a propaganda mouthpiece this would make it easier to recognize.