Be nice to have an iPhone/Android app, obviously simplified, like Sooloos has, just to allow one to play things (like in the bathroom) without having to set everything up before hand from the computer!
It’s in the works for the near future:
https://community.roonlabs.com/t/iphone-app-not-ipad/3249/21
(See update by Mike near the end of the thread).
+1 for a Windows-10-Mobile app.