I have a playlist which I have had forever. I remember old songs didn't have an added timestamp, because they got added before that was implemented. However they got marked as added today, and this really messes up my playlist when sorting by recently added. Being a recently added guy, the playlist is basically destroyed. I get that you wouldn't want any blank timestamps, but I don't want the first songs i added to the playlist 8 years ago be the first ones to show up when sorting by recently added.