I've got plenty of multi engine turbo prop. time and what I do KNOW is that its not God damn rocket science to feather a propeller - if you can't handle that, you should just go back to your office job and fly the latest flight simulator version, where you can do a re-boot! Autofeather - wooow - big deal. Give me a break.
Do what the manual says and what the situational awareness says its right - PILOT ****.
The initial question is a very good one - what do PILOTs acutally do, on the King Airs at the end of the day. To what I recall we would do all the checks FFOTD. This was back in 97-98 EU reg.