Canons AF is still better than anything Nikon make. The D4s only just caught up, very roughly, with the 1dx, and the 5dmk3 is still better than the d750 as shown in numerous tests. Canon has the fastest AF lenses, for example their 35mm 1.4 is faster than Nikons, and the 135 is LOADS faster. 85 1.8 is faster than Nikons 1.8 too. What innovation do you need or what exactly, from a stills perspective? Dont get me wrong, id like to see innovation, who doesn't, but its still the basics that are most important: ergonomics, af, low light, and Canon excel at it.