Blacklist word filter
I believe that each user should have a personalized list of words that they do not wish to see. Content and trigger warnings do not cover every possible event.
Posts and comments containing one of your words would simply not appear for your account . If a user tries to comment on a post, but uses one of the poster's black listed words the comment would simply be rejected.
A word blacklist has potential for Ferzu+ implementation. A free user gets a limited number of words to fill in, whereas a premium user would have unlimited, or simply a larger limit.