Sure, that's an option. You guys are STILL missing the point. Manually blending with layer masks and whatnot is STILL MORE WORK.
I get the point. But you overestimate what can be done with Exmor. The guys I know with Nikon and Sony have not abandoned their HDR software or GND filters. At least one person in that other thread who owns both Canon and Sony told you that the difference was simply not night and day like you seem to think it is.
Your darkest sunflower shot would not have worked on Exmor. You're focusing on the noise, but the tonality is mud that deep in the shadows. If the sun is in the frame and not masked by fog or a marine layer you are going to have to deal with the insane luminance range using filtration or multiple exposures. I would guess that's not really going to change until we have 20 stop sensors.
The river shot with the triangle patch of sky...I'm somewhat surprised you don't have a frame you can successfully process, and I can't help but wonder if you are being too critical of noise that will never be seen in print. I could certainly be wrong, I wasn't there, but I've shot scenes that seem similar and come home to discover I didn't need to blend.
Processing wide luminance range scenes will occasionally be easier with Exmor. You will occasionally be able to use a single frame where you would have decided to blend at least two on Canon. Not all the time. That said if you want occasionally easier...pick up an A7 or A7R and an EF lens adapter. Problem solved.
Going on and on about this on forums is not going to change anything on Canon's development schedule by even one second. It's false to assume Canon could release an Exmor type sensor tomorrow but they're being lazy. It's also false to assume that any of this is going to push them to produce something sooner.