DaveMarx: Sensor size is a non-issue, or soon will be. The inherent technical quality of a 4x5 negative will always beat 35mm. We still moved from Speed Graphics to Nikons. Negative quality was not the pivot point in our decisions. Do you think Nikon doesn't remember? We're at the point of diminishing returns on sensor quality when we have to push bench tests to ISO 800 or 1600 before we see a meaningful difference between sensor sizes. That's like Tri-X vs. Plus-X, man!
10 FPS full-feature shooting? Near-instant AF? A bag full of lenses and bodies half the bulk and weight of today's? One photographer in the right place at the right time, with one camera, one family of lenses, able to sell both stills and motion... We'll see V1s on football sidelines and at news events, and we'll follow. This is how Nikon created the era of the SLR.
They'll keep supporting the legacy format, too. Folks will switch whenever they're ready, and not before. But, flippin' mirror, you're the weakest link. Goodbye!
An intelligent, reasoned, well thought out comment