I'm not sure if this could work with federation but personally I don't care much about favourites/like here... I'm not sure what's the benefit of knowing that a post has been "liked" by N people (in general, but specifically here).
One thing that came to mind is that when I see federated microblogging posts in the random magazine I wish I could "label" them to add them in a specific one so magazines could be curated by the community as well.
If something like this is possible maybe the "like" on the microblogging platform could mean that somebody put your post somewhere because it mattered, just like you can add any reaction on misskey/calckey and on mastodon it's just a like.
I'm using SmartTube on my TvBox and live in fear it will stop working xD
There's also a component for foobar2000 (yes, I'm GenX) called Youtube Source. You can search content, add results to foobar playlists and see the video (embedded in the skin or on a different window). Sometimes the video doesn't load but restarting foobar it's usually enough.
I'm not sure if this is fine but since it wasn't active on every page I've added an asterisk on row 7 like this: // @match https://kbin.social/*
and it seems to work.
AFAIK it happens because old posts are usually updated only when they are searched (I guess to avoid importing too much stuff) and last time I tried you just needed to search the lemmy address but I tried again and right now it doesn't seem to work.
Sometimes it takes time to sync, so maybe they'll show up in a while but if they don't it could be a bug/federation issue.