I was do some monkey work, in another area of interest, and found that I was outdated on my Devuan/Refracta information.
It seems current Devuan GNU/Linux provides it's own Live Refracta Desktop Download. I can be burnt to DVD or raw written to USB (hybrid).
More to the point, of making a live Linux, it seems you can create snapshots of your live configuration. Meaning, while "Live" you can customize the session and export it to a new Bootable Live image.
I image you have to place the snap shot somewhere on the USB/DVD; maybe replacing the original. Or add a new entry to the boot config. I haven't looked into it. It may be more automated than I am suggesting.
I don't know if this option has been a consideration for anyone. I am just adding it for the sake of correctness.