I think the ONE series sounds logical- after all, most people would love a a camera with state-of-the-art speed AND resolution. But I am thinking of other improvements as well:
1) Improved dust protection on the CMOS (vibration screen, static shield, a mountable dust-vac, or something along those lines)
2) Improved LCD readouts- I would love to see a DSLR with a "heads-up-display" like in fighter aircraft, and for more functions than simple AF points. I think a stitch-assist LCD-overlay of the previous photo over the laser-matte screen would be awesome for stitching panoramas. Other useful features would be more camera info (ISO) and other settings on the HUD.
3) Improved ergonomics. Smaller and lighter, yet still fitting your hand- perhaps like the 1v without the grip. Also, I would like to see a shutter release with variable sensitivity for increased FPS. For example, the usual pause in the release for AF/metering, one pause for 1 shot at a time (one shot), and then a deep, graded pause for 3-10 fps depending on pressure- move from stationary shooting to bursts without the need to switch modes.
4) Improved electronics- with ultra-high resolution, memory space will always be an issue, and the benefits of in-camera cropping will be appreciated. Imagine shooting a speaker at an event, but wanting to save space on the CF card while your lens won't perfectly frame the face- shoot at 22MP, but then crop a 6MP image of the face (and save only the 6MP image). This could be done easiest after the fact with the software on the LCD, but even more sofisticated controls on the camera could eventually control a heads-up-display box where the shot is cropped as it is taken. A joystick controller could put the box anywhere.
5) Imroved AF- this one is obvious, but a full-frame AF coverage would be ideal- perhaps still "only" 45 points but distributed corner to corner. There are certainly optical limitations to this one, but there is certainly a way to make it work- there has to be
6) Eventually I think we'll see the fusion of digital still and video capability. Imagine a high ISO (ISO 12800) that is virtually noise-free, in the setting of massive storage space (cards measured in terabytes), and an imager that can shoot at 30fps bursts and the ability to freezeframe any one of those images to enlarge to poster-size prints... It is a ways off, but I think there is some potential there way down the road. Imaging shooting a batter at the plate, shooting at 30fps (or faster), and effortlessly being able to quickly review the 22MP images at a clean ISO 6400 and choosing the image with the bat-on-ball.... every time! Of course with technology like that the concept would lessen the impact of such an image over time...
7) More EXIF info- imagine EXIF data that stores whether IS was on or not, the temperature of the shooting environment, the location (GPS- already have that with Nikon). Even more (and this isn't my idea)... EXIF that captures distance information for every pixel in the image. Thus you can go into Photoshop and selectively alter, say, all pixels between 6 and 10 feet from the camera, while others are left unchanged. This was not my idea, but I have read articles where "experts" believe this would be possible at some point. Wow!
8) More WIFI options... as Wifi gains ground, the uses are going to increase. I used to talk about Wifi as being desirable during my sportshooting days, and many on these forums said how dumb and un-workable idea that would be...Well it is getting better. My town is moving to a city-wide WiFi coverage hopefully within the next year or so. Imagine never needing to take a memory card with you- just connect through the municipality WiFi connection wherever you are, and look though your images already download on your computer at home. Imagine surfing the web for an updated firmware while in the field and downloading it right into the camera from the camera, or viewing (importing shots) from a collaborating photographer on an assingment, loading them directing into your camera so you can chimp his shots too! Won't that get the sportsshooter guys going...
I can't imagine how many possibilities there still are. I think image quality is still highest-priority, and many of these ideas will never make it, but I think there may be a time and place for many of them- we'll see!
Ken
http://www.kennethturley.com