I love being able to paste an image from the clipboard in having clicked the insert image button, but I don't like needlessly clicking on things if I don't have to (mostly!)
Currently what happens is as below
Click this button:
This pops up:
Paste your clipboard that contains an image to get this dialog box:
Once you click confirm the image is uploaded and you get your markup.
I think it'd be great if we could just paste straight from the edit box, to be presented with the Add a Picture confirmation dialog box. I don't see the need for requiring the extra step of clicking the image button. Obviously it should be kept to allow for discoverability and because of the other upload methods.