Allow me to argue the case for putting as many files as possible in the downloadable img files for USB drives.
1. USB drives are big and cheap: 32GB USB drives are $5 each, 256GB are $50.
2. I have 1 GB of allocated space on a 32GB USB drive, I shouldn't be waiting for downloads.
3. I have very fast unlimited internet at work and school, but slow at home.
4. Most of your users want X11. Makes sense to include all the X files. (ugh no pun intended).
Hope these points illuminate an obvious lack in the unixlike community.