SUMMARY The application tab currently shows the app's icon, its title, the volume slider and, if you have multiple sinks, a hamburger menu to choose a desired output. It would be useful convenient if the chosen output were shown as an additional information in a light gray font below, so that you immediately see, where something is supposed to play, without needing to check radio buttons in every hamburger menu.
Maybe if expanded horizontally, the hamburger menu and the device info label could become a combobox similar to the one in System Settings' Audio page.
I can see how this would be useful, and the system already has the data. The applet panel just needs a spot for it. The text could be put next to the hamburger menu.