There’s actually two existing feature suggestions discussing the options you’ve described in your post (though they’re quite dated and one doesn’t seem to have seen any attention since it’s been created). I kindly ask you to comment/vote in those threads in order to help us avoid distracting or cannibalizing each others’ votes
- [Feature Request] Add Last.fm loved tracks as a filter for music libraries
- [Feature Request] Import Music MP3 Ratings From Files ID3 tags → also discussing the last-fm “loved” tag