Stuff on the Mastodon roadmap for 2024:
Timeline of public posts talking about a trending link
Play remote videos directly from origin without caching (save disk space for Mastodon admins)
Quote posts (with safety controls, eg turn them off)
Notify users when relationships are severed due to domain block (transparency on admin decisions)
Privacy settings as an onboarding step
Synchronize boost and favourite counts for remote posts (currently only partially visible)