[MlMt] Solution to the "Reply to HTML" problem?

[mail at assai.com.au]

Hi Benny

Right now, if you reply to an HTML message—even one that you have 
yourself generated using Markdown—you end up with gobbledegook in the 
inclusion.

However, Forward as Attachment maintains the formatting.

Would it be be possible to add a "Reply as Attachment" (or Reply with 
Attachment--but to me the first is clearer) which is the same as "Reply 
as Attachment", except that the original senders populate the resulting 
email.

Does that make sense? Would that be of use to anyone else?

David