I have several different material types and camo patterns, use depending on season of the year, weather and region of the country. I do not believe there is one ADEQUATE all purpose pattern or material. Where I hunt temps vary from 80s/90s in early fall before the leaves turn to below zero and snow by season end.
As I sit and glass, which is common for hunters out west, I have sort of quickly discovered something I never learned when I was younger.
In my youth I had enthusiasm and spirit. In my middle to advancing years I have creaky knees, arthritis, and I tire more easily than I used to. Where I used to sit on the cold hard ground I now look for that soft spot to sooth my tired muscles. That leads me to my tip.
Carry your soft spot with you!
In my pack I carry an air filled, ultralight, camping pad....