3) I personally cannot use the rotation sensor because I HATE my portrait images to be displayed “correctly turned” on the screen. They are simply too small for me. As a consequence, I have to turn them all manually in Capture One. I would prefer, that the camera marks the “portrait” images for the software to recognize them, but displays them on the LCD not turned, so that they are big enough.
Oooh, yes, this is one of the things that annoy me a lot, too.
5) The automatic counter of images should use 5 digits rather then 4, because now I get too often files with identical names. (If you shoot 40 000 images per year, you get 4 identical filenames per year). The naming of files should go like img00001.cr2 to img99999.cr2.
Why should they have to start with "img" at all?
Make it eight digits, and it's enough even for crazy photojournalists.
And if I recall correctly from my short bout with the 1D MkII and the 5D, you can't have both RGB histograms and luminosity histograms at the same time.
But more importantly, it would be really, really nice to have a histogram overlay over the image as an option, so that you could use the full LCD (3" at least in the next version, I hope) for reviewing the image for composition etc. at the same time
as you review for exposure.
Somewhere else, I believe I mentioned the desire for exchangeable grips, so that it would be easy to change to a grip that you
Built-in 802.11g with WPA (or the next generation of WiFi with the next generation of security) should be really easy to implement, too. Ditto for Bluetooth in the most recent version.
More importantly, remember to make the camera a portable storage device, so that transfering files by cable or wireless isn't limited by special drivers and whatnot.
Oh, and sacrifice 1% or 2% from full frame in order to implement sensor anti-shake. (The f/1.x lenses would really shine with anti-shake.)
Edit: Please give us back the EF 200mm f/1.8L, preferably with IS if you don't implement in-camera anti-shake.