Too bad Apple could be implementing it far better. (See image)
Adding to the screen size to accommodate the wrap around and maintaining the 5.5" viewable screen real estate instead of distorting part of the 5.5" display, giving less usable, viewable screen overall.
Then add in 3D Touch. It's pretty easy to mis-tap something on the Edge just by holding it like one would normally grip a phone. With Apple's 3D Touch, you would get no or far less false taps because the sides would require pressure to engage something.