@Gargron
Just because there is a lot of demand doesn't mean that it should be implemented.
Quoting a user's post means that the quoting user doesn't reply to the original subject and context but instead is promoting his/her opinion/comment by *using* the original one. Therefore such a move will result to a passive aggressive-by-design medium (at best) when the actual objective is to create content and respond productively. Also this behavior is generally unacceptable IRL, why having it here?