It would be nice if you could mark a song with different markings. For example, if you have a song you need to replace because it sounds distorted, you can mark it with "Mark A". If you have a song you want to delete because you have it twice on your player, you can mark it with "Mark B". And so on. Having multiple mark categories would keep you from having to refigure out why you marked a song when you go to your emplode to manage your player.