I would be willing to pay to stream to multiple devices in my household at the same time, since we have multiple people living here. Yes, I know the offline option.
I have considered doing Family Premium to set up my other Amazon devices under dummy accounts. However I would like to have access to my own playlists and saved music even though the device is registered to a different account. Is there way that this can be done? Do Shared Libraries exist?
(I am aware there is a similar -- not identical -- topic on this that says "Not right now". However I think Spotify would be well advised to see how many users are listening through Amazon. At this rate I may be better off using Amazon Music as the default instead.)