IIRC, SE emphasizes the fact that QA format of SE sites are designed to discourage discussion. But sometimes on meta we need to discuss issues, they can be lengthly and can go back-and-forth and that is normal. The QA format forces people to adopt to the QA format which is not natural, for example someone raises a point about an answer in another answer and the first one answers in another answer and all end up as answers to the original post without any threading. In serious discussions this makes it difficult to follow the discussion.
I think a format supporting something like Robert's rules of order would make more sense and will be more useful than the QA format for these meta discussions. It would be nice if there was a checkbox like community wiki checkbox that could be set for a discussion question on meta to change the QA format to a format more suitable for a discussion.