all that STUFF is built by engineers for engineers
BUT what a pilot NEEDS is:
an easy way to make sure the plane is flying properly
that it is on the propert course
that it is performing properly in terms of mechanical health
that threats to the plane can be dealt with (IE weather radar)
I imagine that much of today's cockpit information could be dealt with in other ways, for example, on takeoff...a computer voice says POWER set, engines nominal
freeing the pilots to look out the window
but, whatever method, pilots, airlines, governmental agencies, must allocate resources to make sure pilots can handle problems, including problems that are handled in an impromptu fashion...making things up as you go if there is no time to do a checklist