There's an interesting analogy in Stack Exchange, the offshoot of Stack Overflow. While many Stack Exchange sites exist for a wide ranging array of topics (physics, electrical engineering, statistics, parenting, etc.), I've found that the others basically don't work. The questions often don't get answered since the community is way smaller than Stack Overflow, and they are often answered in unhelpful ways with opinions rather than expert suggestions. I think non-engineering tickets would linger for too long, lack widespread adoption, and be 'resolved' with wishy washy opinions.
In short, I don't think it would work! Engineers are a special breed.