I'm not saying that there's no room for improvement. Frankly, I want a smaller iPhone, a pressure-sensitive display, and a physical button to take a picture that's always active. What I don't want is for any of these improvements to fundamentally change the way the phone UX works (i.e. moving to a menu system or something).

The only "bad" design elements, in my opinion, were notifications and Siri. They fixed notifications but I had to turn Siri off.