I think it might be useful to categorize talk page comments into at least two categories: arguments, and explanations.
I have a question.
Do talk pages contain only arguments and explanations?
Better, is there useful material other than arguments and explanations in talk pages at present?
For example, talk pages may include lists of useful references or resources, which I suppose do not fit in the above cathegories.
What if the template/rule exists, but the editor is not bound to enforce it unless he believes an edit war is going on? Constables may gently advise editors to enforse the rules, or not to, in particularly difficult cases.
Ooops, while I was writing, here it is! Great!