Sapphire lens or not, is having the lens of your camera a good/proper resting point for your phone when it is face up? Could be a curved back to avoid that, but nothing in the supply chain that has been released would suggest that - especially with the potentially protruding Apple. I'm not a design expert by any means, but wouldn't it make more sense to have a thicker battery to make the back flush? Or with the protruding apple, who cares? I don't know, this just seems very un-Apple like in terms of sleek and thin design schemes.