I think you've badly missed the point of the several responses on this wish list from Sony forum members: Nikon doesn't have the technology in-house to achieve these features (12 FPS in a 42MP BSI sensor, with a hybrid AF system). While they have class leading AF systems, and do a great job with optimizing microlens and other operational details and specifications on the sensors they are buying from Sony and Reneas, they can neither buy or make a competing sensor to the 42MP BSI sensor - at least right now (although the 36MP Sony predecessor is itself pretty impressive).
Nikon has no interest in that sensor, and for good reasons.
As for bringing back OVF, once you've used a great EVF, you can never go back to OVF systems.
This is what provoked the title of my post. Why would I want to put up with viewfinder lag? I'm also not interested in having my view through the viewfinder dictated by my camera's settings, I want to see through the lens without any alterations of the colors and DR of the scene I'm looking at -- I would hate to see an approximation of what I get from my Live View in my viewfinder -- YMMV, and that's fine for you, but don't presume to tell me what I want or would want if only I knew better.
But we agree with your request for lower lens prices!
Not to mention more lens choices. Sony just isn't there yet, although they are making progress.
I would take the Fuji X-T2 EVF over the my Nikon D810 OVF any day of the week.. Gone is the viewfinder lag, blackout and its simply bigger, brighter, clearer, more useful.
People that think otherwise simply havent tried a GOOD evf released in the last year or so. Things have changed.
Some things haven't changed as much as you seem to think:
Thom still isn't convinced about the lag issue with EVF.
Why is that guy compairing a DSLRs to a low end crappy Nikon or Canon camera.. of course it wont be the same... NIKON Mirrorless is absolute Garbage.. period, end of story. So is Canon...
Real mirrorless cameras are : Sony, Fuji, Olympus, Panasonic... thats it. Canon and Nikon are 4 years behind.
Again.. the MODERN EVFs are excellent. Sony a7rII, Sony a6300 and a6500, Fuji X-T2, Panasonic GX8, Olympus OMD EM5 II, etc..