Systems should not be allowed to contradict each other without mediation.
GPS may not be mandatory in aircraft, but when it is present, then it damned well should be fully integrated into the navigation system, not stuck to the fucking windscreen with a suction cup. <Hyperbole alert.>
Look at what happened here, an easily made fuckup in data entry in one place caused another system to scream blue murder because it thought there was 11,000 km of rock and soil in the direction it was being told to go. The crew misread this as a malfunctioning alarm, which they disabled and ignored, leading to a cascade of other problems, that made it impossible to trust their navigation system.
Maybe this triggered an obscure bug, which left the plane thinking it was flying inverted into terrain somewhere South of the Azores instead of carrying out a textbook takeoff rotation in Sydney.
Here's a thought. Why does the electronic cockpit try so hard to emulate antique analog instrumentation? Why should the pilot or his first officer have to hunt through a sea of indicators for a reason when an alarm chimes? Shouldn't the reason for the alarm be presented front and centre on the main screen?
Even if enough older aircraft exist to warrant sticking to some sort of legacy layout for the time being, eye tracking tech could be used to "blow up" readouts in the direction of the pilot's gaze.