First, I apologize if this was already covered in here.
I would like to see the ability to block an artist. I imagine this would be similar to the way you block a song ("Never play this song again")

There are a LOT of great artists, but there are some I don't want to listen to. Maybe because it's in a different language, or a singers voice personally is unpleasant to me, etc. It could be any reason.

My 2cents