When connecting the Waze app to the Spotify app, you see a dropdown arrow that lets you view what’s playing on Spotify while still seeing the Waze map on the lower half of the screen. So far, this is excellent.
My idea would be to add one more feature: while viewing the compact version of Spotify in the Waze app, I’d like to tap the song to open the full Spotify app. The reason is that I often delete songs after a while, but when I’m using the Waze app I have to leave Waze and then search for the Spotify app. Having direct access to Spotify from the compact Spotify window within the Waze app would be very helpful.