I would like to see the addition of the video file conversion program; Handbrake, and the download manager; Uget, to the default iso.
They are both at the top of their game. We still have torrent apps..but does anyone even use these anymore? In the past I used them heavily, and Usenet clients..then it was Kodi..but I think download managers are where it is at these days.
And whilst we are at it; who wants over-sized and inefficiently compressed video files, when you can easily convert them to a fraction of their original size with Handbrake. Saves buying that 4 or 8 TB hard drive. These are everyday tools and are more default in my toolkit than many of the programs currently installed out-of-the-box.