Romain Guy writes in his (excellent) blog about a simple and great idea to improve commenting of source code. Basically all he proposes is a simple way to include images into comments. I would love this, becase especially when programming Swing it can be really helpful to have an image explaining what you currently have to say in 1000 words.
Of course, the next step would be to have Wiki-like or HTML WYSIWYG editing of comments.
What do you think? Should IDEA push the envelope in this direction?