The features you point out about the 24-85mm f/2.8-4.0 lens certainly highlights it against the 24-85mm f/3.5-4.5G AFS lens that is now discontinued. Why it's discontinued has always puzzled me, maybe it was caught in the rush to DX, but I found the AFS version to be very fast focusing, great color contrast and a perfect street focal length range. I used both lenses for a while; a buddy had the AFD version and I had the AFS. We both concluded that the AFD version was more rugged but that the AFS version gave images that we preferred (on film).
I think FF/FX is now due for a "prosumer" mid-range zoom with all the "updates" from the prior 24-85 offerings.
For really arduous trips where I had to distribute weight and especially minimize what was on my person at any single time, I often took the 24mm f/2.8 AFD, 35mm f/2 AFD, 50mm f/1.4 AFD and a 105mm f/2.5 AIS or 135mm f/2.8 AIS. I could mix and match from the kit bag to the carry bag. I still have most of those, so maybe it's time for a D700.
On the other hand, I think the 24-70mm is a perfect zoom range . My FF SLR kit was a 24mm f/2.8 AFD, 35-70mm f/2.8 AF plus 85mm f/1.8 for portraits/street. The rest was covered by a 70-200mm f/2.8G AFS VR.
Roger It is still ISO, aperture and shutter speed, right?