The big one missing is “design symmetrically”. The way you go in is also wheee you go out. Where you turn something on is also where it’s turned off. Swipe up s

The big one missing is “design symmetrically”. The way you go in is also wheee you go out. Where you turn something on is also where it’s turned off. Swipe up so swipe down and on and on. This is so obvious yet so many completely fail to do it.