I created another one in comparison to the iPhone Air:
View attachment 2562806
The idea behind the larger camera plateau is because when you see the internals of the Air, a second camera next to it would take up too much space, so below it would make more sense. Also not having a 3rd camera leaves more room for the brains of the device and then the rest of the bottom and the other screen side can be completely batteries.
Regarding the hinge, I think other manufacturers would've come up with something really innovative already, as Apple is more of perfecting instead of innovating at this time. But I hope they can surprise us.