Google, when I access Google Play you should be able to look at the hundreds of albums I've pushed up to my music cloud and eliminate those that I already possess from your advertising sections.
Google Play Music shouldn't be a silo.
Today I have the Make-Out Music section at top. Scrolling through the albums in that section I see several albums I already own and have in my Google Play Music library. Wouldn't that space be better used to present other albums to me?
At a minimum, the ones already up in my cloud library should get a check mark like you do with apps and books, when I see them in the Play store.
There's always room for improvement, even for people who do computing that often makes me say, "That's so cool."