How about including a simple drawing tool in the answer section. I was faced with answering a question about cmos transistor layout today. I needed to produce some graphics for this. This was as simple as a few rectangles and some text annotations.
So instead of using an integrated tool I had to go to my graphics editor of choice. Save the results and then crop them to fit the images in the answer section and then upload them.
This was time consuming and cumbersome at best. If I was not in a position where I have some time available at present I would not have bothered to answer the question.