I voted no.

But I'm not really sure just what the difference is between Quick Reply and Reply;

If I just start typing in the QR box I presume that it replies to the last post. This can cause a problem with threading with lazy people responding to wrong posts. I suppose that even without QR that it is always possible to do that anyway by clicking Reply on the last post, but at least the perpetrator has to take an action to do that which helps minimise those occurrances.

So I presume that if I click the QR link on a specific post then the QR box becomes a reply to that post. The only thing that I can see missing compared to the standard Reply is all the extra font/color/UBB/icons that are new and that most people seem to dislike anyway. If I click 'Preview Reply' I get to add attachments (as with standard Reply) and those options come back anyway.

It's all un-necessary complication.

For my money I'd remove the automatic QR box, so that people had to choose a post to respond to, and then rework the post links such that 'Reply' takes you to the current Quick Reply box, (now linked to that post). Rework the 'Preview Post' text in the QR box to something like 'Preview/Attach/Additional Options' and remove the Quick Reply links!.