I know we are only in private beta, so this may be premature, but should we be concerned about the number of answers per question that we will get in the long term?
To put this in context, I had a colleague who never gave partial credit on biology exams. His rationale was: "This is biology. It is either right or wrong." While I don't agree, I can see the point. I think that questions here will often generate a single really good, well-documented, and comprehensive answer.
In contrast, take stackoverflow. In programming there is usually more than one way accomplish a task. I recall one question that generated ~20 different, perfectly viable solutions.