While I can appreciate the little notification regarding the next song being played, I don’t always have the next song stuck in my head (especially on large libraries). A way to improve the Radio might be to allow the pop to stay a little longer, so that I may in hindsight agree or disagree with the next song being played. Something like 5 or 10 seconds of it remaining, maybe with a “was this a good pick?” could help improve the AI and better suit my own tastes.
Just a suggestion 