I don't know if this would change the ranking but I've always wondered if it would be good if threads were ranked by the waited sum of all replies to it. In oth

I don't know if this would change the ranking but I've always wondered if it would be good if threads were ranked by the waited sum of all replies to it. In otherwords the original comment might not have a high vote but if a reply did, even a deep one, the thread might appear at the top. Or does it already work that way?