What if next year Apple released an iPhone Classic in the form factor of the original 2G iPhone, with the guts of an iphone 6, OIS, and a 4 inch screen. But because of the extra space, the battery would be double or even triple the capacity. It would satisfy those who want extended battery, a more sturdy phone, a smaller screen but still have all the modern advancements. It wouldn't need to be obsessed with thinness. And each year it gets upgraded internals and bigger battery but the form factor never changes.