I can see this as a big advantage for night sports, night street, astro, or even night nature photography actually if the AF can keep up... But everything else... not so much. Might make f/4 lenses more appealing to save money if the amount of background blur isn't that important. I actually wish they made more powerful speedlites to battle off unwanted ambient light like at this one venue I shoot at with harsh yellow spotlights
Or how about new sensors that improve lower ISO performance?
Nikon electric fan, gas stove, and slippers. Canon Elan 7, 1D Mark III, 2x5D mark III, and 6D. Canon 24L, 85L, 135L, and many other lenses. 2x Canon 580ex II, third party speedlites, studio strobes