For one thing they were so obsessed with security as a concept devleoping it that they completely ignored the use case of screen-readers for the visually impaired and prevent apps from accessing text from other apps and as far as I know it is still an issue.
There are “two-way” remote start kits that have a display on the fob to report back AC state, engine remaining run time, and door lock state. It also helps for making sure the button you pressed actually reached the car.