Having read so many threads and watched so many videos about the lack of design change from the 6s to the 7, I am quite curious about what you all would have changed. Personally, I don't like the idea of another iPhone with a glass back and quite like what apple has done with the antenna lines on my matte black 7 plus. So the title says it all. What would you have changed design wise from the 6s to the 7?