It would sometimes be extremely useful for documentation purposes if I could insert images as comments right into the source code. You know, "a picture says more than 1000 words".
MS provides a sample implementation here: http://visualstudiogallery.msdn.microsoft.com/793d16d0-235a-439a-91df-4ce7c721df12/
But this tool has a lot of bugs and is not fit for production environment.
It would be great if R# would support this feature as well, and of course without bugs. Perhaps you could consider this for a future version?