the probelm is you donÂ´t understand what im saying.
the diffraction limit of lenses makes it just MORE nonsense to ask for a 36MP FF sensor.
Not every landscape is shot at f/16 or f/22. Using hyperfocal focusing, T/S lenses, or focus stacking one can shoot at apertures which yield more detail.
Diffraction does not impact any format more than any other for the same desired FoV and DoF. I've spent 2 years getting a true 18 MP out of a 7D while shooting landscapes with near foreground objects, typically just by using nothing more complicated than hyperfocal focusing. That means I could get a true 45 MP just as often out of FF if such a sensor was available. Canon's T/S lenses open even more opportunities for shooting at optimum apertures yet having everything in focus from very near to infinity.
I should also point out, since this discussion includes what is/is not the sweet spot of a lens, that the final resolution of any system is not bound in the way most people think. Most people think there's a fixed number for, say, a lens at a given aperture, and if that number is lower than the sensor number then that's the final resolution. Nope. I would have to look up the exact formula, but resolution is:
* Always less than the weakest part of the system.
* Comes closer to approaching the weakest part as other parts increase.
If your lens MTF50 resolution is 60 lpmm and your sensor is 80 lpmm, final resolution will always be <60 lpmm, but increasing sensor resolution even further will actually help you get closer to 60 lpmm.
Resolution is also an MTF curve, not a single number, and modern software is exceptionally good at increasing MTF in post (sharpening). So if you're theorizing about maximum MP's from a sensor based on MTF50 numbers for a lens, you are way off what's possible.