I do want to improve the quoting. Two parts to it:
Allow highlighting of a users post content and as you do, make it into a post in the reply box i.e. no direct copy / paste required (although some 'quote' button may be needed in practice)
Attribute the quote to the author with their name and avatar (probably in the bottom right of the quote or as a mouse-over) with a link back to the original post for reference.
Right now though, it's not super-high priority so don't be expecting it in the next few weeks!