I've been a big proponent of album art on the big screen while streaming for a long time and while this is obviously a great step, I think the utility is a bit lacking. One has to turn the tv and Apple TV, start streaming music to the wiim (this has to be done after powering on the tv if you have CEC enabled or the tv will kick the wiim out of wifi mode), and launch the app and then do those steps again in reverse. If you mainly use Spotify, it's the same process for their native app which exists on basically all platforms (although they refuse to show large album art for some incomprehensible reason).
This is why a hardware hdmi output would be much more streamlined/usable. You could start streaming to the wiim and have the hdmi output wake the tv and select the correct input automatically, and power everything off with one button. Fingers crossed for that option in future hardware revisions.
Until then, I'll be looking for some way to automate the process, maybe with shortcuts/