First thanks to provide us best download manager i appreciate your team work,

Please add option like IDM and ANT download manger to save downloaded files in folder based on their categories, i mean save video files in video folder and zip/rar files in compressed folder and video in video.

Also add download pannel for YouTube videos.

fdm>add tag>edit tag>fill file extension>default download folder

additionally you can also use fdm>preferences>default download folder