I have really adopted this functionality, and use it constantly.
I miss one thing:
Very often I want to copy text from previous comments, to quote, but mostly to copy the wikitext; url:s and wikilinks for clarifcation (rather than saying "look above, it is somewhere in previous links" implying "you lazy S*B") and usernames (for pinging).
Now when you copy it becomes plain text.
- So, when hitting answer, if text marked and copied around the "answer-dialogue-box" would be wikiformated in the same way as it was when pasted into the answer dialogue, is missed.
I hope it is understandable what i miss, and I understand it is a lot to ask for. But does such a function make sense to anyone but me? To me it affects more than half of my answers, maybe more, mostly due to pinging where I cant use copy-paste.