Interesting topic - it is such an individual thing !
I would add, possibly as part of the comfort aspect, places within easy reach in the cockpit to store stuff. Such as charts,log book, POH, water bottle, jacket, lunch - let’s call it cabin ‘utility’, and maybe even cabin heating & ventilation……..and then tied to the mission would be outward visibility, useable load, endurance and secure baggage storage.
My mission is primarily lengthy cross country touring with a pax and commonly at MTOW.