This probably wont be well received but because of a situation I was recently involved in I am requesting a feature that, as the writer or an answer, I can turn comments off for my answer.
Here is the situation, I posted an answer to a question. The answer was off the norm and controversial. This generated comments for clarifications, I replied in the comments and updated my answer. In my reply I also defended my answer. This started a discussion in the comments.
The discussion was civil and as a whole was a clarification to the answer and why is was my answer. It added depth to the answer that as a whole helped.
All the comments were deleted with the exception of one negative comment. The remaining negative comment was in response to a down vote. At this point I deleted my answer. I felt that if I would respond to the remaining comment defending my answer and the reasons for giving it, they too would have been deleted as a discussion.
The alternatives I see are 1) allow discussions in comments 2) allow me to turn off comments for my answer or 3) creating a true forum style area for each answer rather than or in addition to the current comment system. I don't see moving discussions to the chat system as a viable alternative for the reasons listed here.
This wouldn't be a big issue but I see more and more SE sites enforcing similar policies for the comment system. I fear that I wont answer a question at all if the answer is controversial in any way as the system stands now as i will not be able to defend my answer.