I wanted to suggest that there be a player name that is displayed on the UI home screen/header bar. I currently have 4 different pi's running Rune, and when I have the default UI up, there is no way to tell which player I'm talking to (I have the UI page added to homescreen from Chrome on Android, so none of the browser chrome (i.e., address bar) is visible).
I did manage to work around it by modifying one of the files (i think it was index.html/php, but it was a while ago) to put the player name in the upper left corner. However, it doesn't work very well on phone screens (or other screens that are too narrow) because it gets shoved behind the RuneAudio logo (I couldn't figure out how the style/CSS worked on that).
I think it might be useful for users to be able to modify that text from the settings menu (like where you set the player name), so that it's easy to tell which player you are currently talking to.