I know this is an old thread, but this would be a great feature. It could just be an option so people who want to retain the function that is available now can. But I agree with earlier posters (and some people on reddit have also voiced), that having a home button as well as a back button which returns to home immediately is counterintuitive. Of course having the default start screen or open screen being now playing makes sense, but often pressing the back button is easier than clicking around on the screen to get to the current playlist.
Please make this a feature!!