Hello Mark
You have very good ideals!
I am new to this project myself and and not an insider.
As far as I can see the work is still all at an early stage. The founders are all highly committed to the project but also have to earn their own keep working on non-WikiHouse projects.
One of your ideals, however, I find to be particularly interesting
>> require just the tools available in a well equipped tool shed (not a full sheet CNC machine)
If you go to virtually and building product suppliers anywhere in the world, you can ask for and receive advice, instructions, drawings and more for building simple structures suitable for that locale. And all buildable by two people with simple power tools. The structures will tend to cost at the lower end of the scale of the local economy.
My feeling is that WikiHouse is not an attempt to compete with this sort of local practices.
WikiHouse is actually about trying to disrupt this sort of building - because it is so often of low quality, time-consuming and costly.
This leads me into thinking:
Can we design jigs that turn common home-quality routers into a rough and ready CNC machines?
Can we use the smartness of the thousands of craftsman now regularly visiting the web to use the tools in your shed in fascinating new way?
Can we use the materials available from your building supplier in entirely new ways - so as to build faster, cheaper, better?
Like you I wonder where are the 'places where people interested in similar things gather?" Until something better comes along, I'm here...
Theo