Anyway, at the end of the day if all Canon sees and hears is that it's not that big of a deal, nobody but a few will care, we will be stuck with this old 500nm fab for another decade or two, literally. So I don't see that it does anyone any good to minimize it. Even if you don't need it, it won't hurt you and a new fab might bring stuff that you do care about more too. Plus at least once in a blue moon you must mess up the exposure on a one of shot and at least you'll be able to rescue that better. And for those who do care more, we'll it would be great. Less money to get all your gear from one brand than a mix. Less to carry and drag around which can be a pain, literally. Canon does make awesome lenses, has a very nice UI and so on so it is nicer if Canon improves their sensors to go to a different system.
The thing is, we don't know yet what fabrication line the 70D and 7D2 sensors are made on... but we do know that going to the 20.2Mpixel design from the 18Mpixel design, the ISO performance increased slightly... The more complex lithography required for DPAF should have meant a reduction in high ISO performance, so they must have done something to counter it, and using their existing 180nM line (P/S sensors) seems like the most likely scenario... Also, it costs a lot more money to keep 2 fabrication lines open than one, so my bet is that the death of the 500nM fabrication run is already happening.
I wonder if Chipworks will dissect the 7D II sensor. It's been a long time since they dissected a Canon sensor... Would be nice to know what process Canon is using.
I would like to know what ADC they are using, I suspect that it is something like the Analog Devices ADDI 7004. Their sensors seem to be just fine regardless of what geometry they are making them in. They seem to be getting in excess of 15 stops of DR out of the latest ones (6D for example), if you believe Sensorgen. They just toss it away on the bottom end due to an implementation that is not optimized performance at the bottom end of the ISO range like the Sony stuff is. In terms of the sensor itself, it appears to be every bit as good as anything that Sony has produced (except for whatever they put in the A7s, or whatever that one is that can see in the dark).