When documenting bugs, capturing screenshots is the most labor intensive step.
HTML5 and Chrome, at least, supports your javascript receiving image data from the clipboard.
It would be absolutely AMAZING to allow your rich-text editor to paste a screenshot from the clipboard directly inline with the text. Upon paste, the image data is uploaded to the server and the embed-url is immediately added to the rich content. You could do fancy things like show a thumbnail of the image and allow it to be shown 100% in a popout.
AFTER the initial release (which would be instantly valuable) you could add features like cropping and highlighting.
