Hi Dream, In extension to Super Human series, how about exploring the possibility If we can have super human vision 
Something like eagle or hawks eye field to have 20/5 vision,
Ability to see more than the normal light spectrum including ultraviolet range like Tetrachromats
Acute color differentiation and ability to see different colors
Zooming capacity for a human eye (not sure if thats at all possible bcz of fixed eye position to the socket)
Added rods and cones along with improved night vision like owls
faster reflexes of the eyes
Aboriginal group in Australia are blessed with 4x times better than other non-Indigenous people.
There seems to be few people who have the super human vision in the world.
I am sure there is lot of anatomy,genetic and physiology involved and effects studied here but would be great to explore this possibility or maybe you already made this possible 
:) Thanks