Biggest feature I'd like to see added is intervalometer capabilities in-camera. No reason why this can't be added to the camera firmware. Would also be nice to have RT control of flashes (but I doubt that will happen as it would kill the sales of the ST-E3). Other than that, I'd always like to have improvements in AF, FPS, MP, DR, etc. I would expect that any improvements there would be incremental considering that this is a mature product line.

Just to weigh in on the DR issue, I would think that measuring the DR of the human eye would be very difficult. Wouldn't your eye be constantly adjusting the pupil diameter as you change what you are focusing on? So in Rick's example when you focus on the bird your pupil dilates to see the bird brighter and when you focus on the background your pupil shrinks to not "overexpose" the background? I know the eye doesn't adjust always that quickly, but I would think it would have some effect on perceived dynamic range. In any case, I don't see increasing the DR of a sensor or camera to be a bad thing and any improvement would be welcome!

Stephen