@JFX
There is a discussion on reboot.pro about legally getting hold of Microsoft boot files without distributing them.
http://reboot.pro/topic/22277-ventoy-open-source-usb-boot-utility-for-both-bios-and-uefi/page-6#entry214869
It would be a nice feature of GWT if it could extract all the boot files (bootmgr, boot.sdi, etfsboot.com, bootx64.efi, bootia32.efi, + any others you can think of), without needing to specify the specific ranges and paths, etc,
Is this practical or would it be better to always reference the ISO and file path?
How do you obtain the URL of more current Win10 (say) ISOs from http://care.dlservice.microsoft.com/ - are they available?