Do you understand your amplifier?

I have a good understanding of why they are good fits into my systems, and I had a decent idea of what to expect they would sound like prior to hearing, but the 80/20 rule is in effect here. You can't know exactly how anything will sound until you hear it.

Foster, that's a very good idea and totally feasible, again at least as a tool for getting people into the right ballpark regarding good equipment choices for their needs.

Question will be what is the market for it?

I'll add it to my list of things I might do someday when I retire.....

Exactly!

Build it and they will come?

"why should I waste valuable nap time learning modern amp technology when other well trained geniuses are working on these things for me"

The only reason would be is that an amp is a component in a component system. In component systems, for best results, you care about the interfaces between components, but not so much on the internal workings of the component. That is the domain of the geniuses who build them. The interface between each component has to be considered though to determine which ones can work together well.

Even in the best case of a stereo system professionally integrated by an expert using one or more boxes, for best results, you still have to deal with the integration of the system into the room. And also, for best results, the integration of you and your ears into the room (ie listening location).

At that point, you have all the bases covered and life should be good audiophile-wise!