I was thinking about this the last few days. I kind of feel that (besides the home button) Apple should have implemented the new swipe based controls to the entire iPhone line that gets iOS11. If we all had the SWIPE UP to go home/SWIPE DOWN FROM RIGHT SIDE for Control Center, control scheme we would all be used to the new UX. They could still allow the home button to go home obviously but adding this would help make the adjustment easier for everyone for when they eventually make every future iPhone run this UX. The fragmentation between the 6,7,8 to the X is too great right now for for devices that only have 3 real differences.