For me, it was actually the implementation of the forced timeline algorithm that was the breakthrough for me to finally leave Facebook after a long frustration. That was more than a decade ago. Now these algorithms became standard.
I would like to see multiple timelines, so to speak - for example, the favorite lists on Twitter would be available directly on the home page. That’s where I would actually find it useful in parts: My list for comics, for instance - sorting them by most popular posts from the last week? Why not, would be useful. Inoreader also has such a feature for premium users. For the home timeline on social networks, on the other hand, I really think it’s pure poison. On Facebook, it meant that I no longer saw posts about events in my private, healthy circle of friends - and instead anything that generated controversy was flushed to the top.
No announcement yet, not even on their blog/Mastodon-account. Nothing but a release-note mentioned on reddit linked to their Github release-note.
As for a database, https://www.themoviedb.org/ fits!? https://www.trakt.tv/ for scrobbling & collecting as they do it better and one of the various trakt-apps for mobile - I prefer https://www.moviebase.app/ which is awesome.
A noncommercial replacement for Trakt would be awesome as they do not really listen to their customers. But as long as they provide their good API, I’m fine with it.
With its ‘aspects’ and hashtags, it’s much more a Google±replacement to me. I like it to get in touch with foreign people about similiar interests and topics - but I don’t think that it’s a good replacement for Facebook. Soapbox or maybe Friendica with little deductions.
I wish someone would still take on the project. Unfortunately, at least for me in Edge and Opera, for example, the search no longer works at all.
Unlike other interfaces, Cuckoo+'s implementation as a PWA works smoothly including push notifications. I would be really happy if someone, instead of building the hundredth Mastodon client, could fork it and bring it to life. Because this is a client that I really would like to recommend to the non-techie-friends to get into Mastodon. Besides tooot, which is just as great, but only available on mobile.