When there is time, I think we ought to hide topic suggestions which come from the Pit category. It is often against the rules to link to the Pit from a topic in other categories. We probably shouldn’t let Discourse break that rule.
The administrator or transition team can hide topic suggestions which come from the Pit category using a CSS rule, according to this topic from the Discourse meta forum: “Hiding specific categories or sub-categories from ‘suggested topics’”
~Max