I like the sound of that
I'd heard of eye-af, isn't that like the thing Fuji do where the left or right eye is recognised and set as the AF point?
I know what you mean about light capturing, moving from full frame was very hard for me, but in the end I wanted a lighter system and as no full frame system can have small lenses it the price that had to be paid.
Were it not for that I may well still have had the D750 (Sony sensor), still I'm glad I moved, I'd miss the feel of it now as I'm used to all those lovely dials.