I wouldn't call the A320 family cockpit dated, it is clean, spacious and functional. And it is easy and logical to fly and works extremely well.
You wouldn't really say that a new car with a manual clutch and manual gearbox was dated, even though that technology is over a hundred years old, and much more modern DSG auto boxes are now available.
And the Airbus systems and design are still class leading.
An integrated EFB would be good, but there's not much room for the screens anywhere on A320, except on the outboard window ledge.