Let me add to the chorus: the ability to simply long-press a folder, have the playback/shuffle options come up, then long press the shuffle icon to immediately shuffle that folder's contents including the contents of all subfolders, starting with a randomly selected track, was my primary way of using Poweramp. I suppose it's good to know that I'm not crazy and this function just doesn't exist any more, but I'll be really happy if it finds its way back.