Sonos App needs a total makeover

If you check out the Spotify integration in the Sonos app, you can see that’s definitely possible to have a nice integration even with suggestions etc. but as mentioned here before, the music services need to implement it and use the provided API.

I agree that the app needs a makeover, especially the Windows version.

I would love to have more flexibility in My Sonos Favorites, for example make folders to arrange my favorites into.

Another option would be to give me better search results when I search in the Sonos app for an artist in the services Mixcloud or Soundcloud

To repeat, Sonos is no longer providing anything beyond bug updates to their desktop controllers, both Windows and Mac, and have indeed removed much of their functionality at this point. Further feature development will only occur in the mobile versions of the controller, until Sonos changes course. 

Search results come directly from the music service via SMAPI. If you are unhappy with the results from those music services, you need to take it up with them. Sonos have nothing whatsoever to do with search results (of course, think about it, how could they?), they just display them.