This sounds great in theory but my my experience is that non tech people make horrible SE's. Even if they don't do the coding only participating in the spec. They simply don't even know what they don't know. Which is why SE exists and why these type of projects always fail to gain traction.

In my life of the thousands of non tech people I've worked with I can count in the low double digits that were capable of working in SE without exp/edu in it. Even then they were all up and coming driven people that still often missed what to me were obvious things, because its not their area of expertise. (They were all brilliant in their own area)