I would love to see something like the Pixel's Now Playing feature come to Apple devices. If you haven't seen this, it periodically, passively listens for background music and displays the currently-playing song on the lock screen, using a local database of IIRC 20,000 songs. There's a paper about it (https://static.googleusercontent.com/media/research.google.c...) – but I'd have to guess it's patented and we won't see it soon.