How about integrating with Pandora! I believe there are quite a number of squeezebox users that will switch to Roon!
Logitech Media Server is still available. It is, and was, open source, and now responsibility for maintaining the software is with the community. Only mysqueezebox.com was shut down.
Moreover, you can continue to use streaming services using plugins.
You are correct in that LMS is still there. But without mysqueezebox, we can no longer stream Pandora unless you know of another plugin that will allow it…
I think the fearurereqiest title needs to be more specific, i.e., Pandora integration.
However, please note …
I am sure if interest is high the community will create a plugin. They just did for Tidal as that went with mysqueezebox.com. Go over to their forums and make some noise.