I, too, would like to see the addition of a volume leveling/normalizing option.  Especially when using Echo's multi-room music to stream Pandora to multiple devices concurrently, the often drastic volume changes between tracks are a major pain as a manual adjustment of each device's volume level is required!  Most other streaming services have offered volume normalizing for a long time; I'm honestly shocked that Pandora doesn't already have this. ... View more