I no longer think it is so important to have a full frame or MF sensor for detail-rich scenes. Now that we have software like autoPano Pro for stitching even tripods can be dispensed with by the careful photographer.
As this hand-held composite picture of a 100 year old locomotive shows
here in my first use of this amazing software shows, we have reached a new level of creative possibilities.
So the view I'm now moving toward is that for the non architectual and non-scientific work, stitching is now come of age to be part of routine work. Add to that bracketing, one can easily achieve high dynamic range photographs, without much cost, using less than full frame cameras.
So now the advantages of low light high ISO, low noise, fast-focusing cameras such as the 1DIII could clinch the technic of pano construction by overlapping frames even at dawn and sunset where changing light had previously been the challenge.
This camera should open up new technics for photographers. I'm now looking to see what I could sell to finance one for myself.
Asher