Waiting on a 1DV
1. FF sensor that is 1-2 stops better in iso and dynamic range
2. Better ergonomics, maybe a new power switch too?
3. Video, don't really care... just whatever those video fanatics want...
4. 1Ds viewfinder or better
5. 10 or more fps, 9 shot bracketing... yes 7 is not enough for me.
6. More peripheral AF points
7. 3:2 high res BRIGHT AND ACCURATE oled
8. all those niceties: GPS, built in wifi?, electronic level
9. radio flash
also, radio triggering
10. 1.3, 1.6 crop modes plus 16:9 and 21:9 crop modes, a panorama mode would be nice too
That's pretty much all I can think about for now.... all these can easily be put into the next camera.