On Track,
You have made a very good observation there and a regular problem. To my knowledge there are NO requirements and nor there should be.
Always remember, IT AN AEROPLANE!
LOOK OUTSIDE and always get back to basics when it turns to S@@T.
Know what to do if it fails while in IMC, know your systems back to front and never forget to enjoy flying.
I personally want no intruments when I go leisure flying.
I have flown with guys in modern airline jets who forget its an aircraft and forget to fly and only finger push. I have had to tell some F/O's to leave the FMC alone when in the circuit or TMA. It still amuses me to see pilots who get too carried away with screens and buttons.
COMMON SENSE is a lost art
PS Dont just follow the magenta line.