I came here to see if this was possible/request the feature. It would be really useful. Our use-case is a student-support forum where we’d like questions to time out after a specific period of time to avoid cluttering the category with prosaic queries/noise. We’d like to be able to manually preserve some topics where they have lasting relevance, but this would not be the default
Relatedly, it would be cool to have an admin/moderator feature where topics that are about to be deleted can be reviewed before they go. If a moderator could subscribe to a weekly digest of to-be-deletd topics and replies that would be even better.