Album shuffle
It would be great for Music to have an "Album shuffle" mode, where it picks a random album, plays it from start to finish, and picks another album randomly to repeat the process.
The "Next" button would skip to the next song within the album, until the last album track is reached, followed by starting a different album randomly.
It's a feature from foobar2000 that I miss in a lot of players, forcing me to simulate the behaviour manually, every time an album is finished playing.