Brian, thanks for all the research and time spent in this group think. It strikes me that any one of us could readily assemble a small production facility and custom build & ship components like this in several models & special sizes to less experienced carpenters and homeowners everywhere. People have bigger things to be concerned with besides reinventing the wheel. Obviously, the ideal business model would be built on open-source, 'people care' services and pricing at the component/base-model end, while enabling custom installers to prosper as they carry the load of actual on-site customization-issues.
Ultimately, this is what DirecTV and DISH should have done with their once formidable group of quality custom installers. Instead they screwed us completely! My thought is that any client ought to be able to order a kit for around $400 to $1,k which comes drop-shipped with an active list of regional custom installers all supported through the vendor's site, much the way Paul so generously has done here. Offering free info on sand, rock, pearlite, beautiful cast fittings, etc. through partners wishing to provide local access to all these things, plus reasonable mark-ups on core company shippable items, would enable this company to quickly establish market saturation.
The key is customization and architectural integration. How does starting pay of $32.Hr for the 'lead,' and $22.Hr for their 'trusted assistant,' in cash, sound to someone who is otherwise consumed with basic survival, 24/7/365, on their of-grid redoubt? People would be thrilled to have even higher priced turn-key solutions for these second homes in Breckenridge and Aspen. (Free lift-tickets pending!)