Civil aviation: A single headset could replace/augment all displays on GA planes, and add information not generally available of fixed displays, like terrain an

Civil aviation: A single headset could replace/augment all displays on GA planes, and add information not generally available of fixed displays, like terrain and weather. Pilots currently fly with iPads for terrain/maps and ask ATC for weather. The reason I believe in this is, cockpits are 50 years old in average, no room for more instruments, there is a lot of money to save and a lot of money available for devices, it’s a “mass market” enough and it is a wealthy/high education population.