I can't see selling the board without any manual. But I can see that a manual for the "advanced eXperimenter" could be considerably less work. Just a description of each section (shunt regulator and C4S), no applications. Kind of like a transistor specification sheet.
The tough part is that there can be no guarantee or support if your attempt to use it fails. We spend a lot of time and thought on our regular products' design, parts selection, and the manuals to prevent failures, and the resulting good success rate is part of our reputation. It's also the only way we can sustain the current level of support on the forum.
The Paramount soft-start upgrade kit is still listed on the web site. It includes two of the most recent board designs, along with all the parts for a standard application. A relatively modest document could be written about using it at different voltages and currents, not straying too far from the Paramount design. Just for perspective, if we could expect sales of 50 to 100 kits (100 to 200 boards) then it would pay the cost for me to write such a document.