Curated timelines of accounts. Not built yet — and we would rather say so than ship a stub.
Lists are on the roadmap after communities and search settle down. Until then, three things already do most of the job:
The closest thing that exists today: a shared timeline around a topic, open to anyone who joins.
Following is strictly chronological, so a tight follow list already behaves like a curated timeline.
Save individual posts to come back to.