option to download YouTube to mp3 files without thumbnails (e.g. check box?) - applying this option to all your download programs might be convenient as well

the thumbnail image of a YouTube video doesn't turn out well in music players with the option to display album art since the formats are different - its literally trying to fit a rectangle in a square & for OCD minimalists 'sometimes you just don't want any images with your media files #clean & simple #utada hikaru