Is there a way to get a bigger edit window, either by popping it out into a separate browser window ( like GMail) or with an expandable edit box. I was creating a rather long reply (not posted yet) and it was a nuisance to do it in the scrolling window. I ended up composing in GMail for copy/paste back into Discourse.
If not, may I suggest it. I think making the edit box expandable is not too hard, though the way the box and the preview box to its right are situated might complicate things. Maybe get rid of the preview when the edit box is expanded. Also, I have seen poor implementations of expandable edit boxes where the box keeps shrinking back to fit the text edited so far.