mark a comment as answer to a question
Some time back, I had asked "Way to convert an answer to a comment?", and got answer that Diamond moderators are given this feature.
I came across this question where the accepted answer was in a comment which the person who asked acknowledged correctly.
I think it would be a good idea to have an option for moderators to convert a comment into an answer based on a flag. Then it is left to the person who asked the question to award reputation and or accepted answer.