I believe that the key to managing a forum lies in people rather than a spherical super perfect forum software in a vacuum.
Your forum has 80k+ users, but only 10 TL3s. Let’s say 100% of TL3s are bad guys (oh my god, that’s a disaster). You also only need to deal with 10 saboteurs. Editing the title or the category will cause the user to be notified, after that users can flag it, so moderators should be aware of it quickly. I think it should be the moderator’s job to deal with only 10 bad guys out of 80k+ users.