What if next 5d would have interchangeable sensors?
I don't think it's not possible from technical point of view. You can change a processor in a computer or put more memory. Some kind of transport and microadjustment would allow to avoid not proper embedding.
From marketing point of view - wouldn't you like to have a body with a choice of having ie 18MP 51200 ISO or 36MP 12800ISO?
What if they would also allow change (or add another) signal processor? 3 types of AF board?
Let's say 800$ sensor, 500$ - digic.
With some restrictions this idea wouldn't canibalize 1dx. You could for instance build a body of same capabilities but higher price summing all parts' prices than 1dx itself.
Red is going some simpler way with it's skeleton (they don't allow to change sensors but why not?)
What do you think?
I'm almost certain I read that one of the advantages of the RED Scarlet was the fact that it was "future proof" since you could upgrade the sensor later on....