True, we'd be upgrading regularly, but it would be better than throwing out our Nikon D1 bodies- I'm sure some people still use them, but the first DSLRs that came out are probably so outdated that a D40 probably has better image quality than it.
I mean, the body is fine- it's just the internals that need replacing if it were possible. It just seems like a terrible waste to me. An otherwise perfectly fine metal body thrown out.
Yes, I have heard that RED makes a swappable sensor camera, but I wouldn't mind if Nikon decided to dabble in it.
And I'm still waiting to shoehorn a D3 sensor into my D40. :D
Adamz, I don't think so- I'm sure they could profit off of individual parts sales much more now. Since everything would be swappable/modular, they can spend more time on developing everything within the camera and spend less time updating the body.
I can always dream.