Absolute best value

Well reminded.

If we set up a gallery where is needed to have like 30-40 photos, biggest being about 2x3m size and most common about at 40-50cm size, then there really isn't much benefits to get any larger sensor camera for almost anything than very very special purpose work like a action photography where not even 7D II qualifies but requires something like D4 or 1D X with best possible optics.

Still the weakness is in telephoto area and partially in architecture. Panasonic-Leica 100-400mm is good start but just 1.3EV too slow at worst case. And we don't have any tilt-shift that would offer some benefits in architecture (because shift) or product/close-up photography (because shift and tilt).

We need to go to very special kind photography to hit the limits of current gen cameras. Even astrophotography isn't outside of limit zone, especially now when we have 8mm f/1.8 fisheye to even increase the possibilities. And anyways there are way more important tools than camera for that job, like tracking platforms.

Yet we can hear and see pixel peepers and 35mm fans to come in and try to say all the time how the difference is so big and meaningful that m4/3 cameras are just underperformer and bad compromises by image quality. Sure there are difference if we look at 400% magnification ratios over common display PPI, even a 100% is like throwing those few metres size prints that people then pixel peep with magnifying glass in other hand that small 400x400px area how there is such a difference, forgetting that rest of hundreds of centimeters is left away from comparison.

Same time people forget that best photographs are not those that are sharpest, perfectly freezed action, lowest noise or grain, or that has most accurate white balance or colors.

It is always the photo content itself and it can be done so many times "wrong" or "correct" that camera gear doesn't matter.

Gear heads just easily forget the context and goes to extremes where the 5% difference in technical merits in sharpness or noise is like life and death.