All my co-ops appear to be in the BGG Medium weight. My lightest to heaviest favorites but I enjoy a lot of others also: Light: The Crew - 2.03 Forbidden Desert - 2.03 Medium: Pandemic Fall of Rome - 2.45 Atlantis Rising - 2.46 Heavy: Commissioned - 2.8
All my co-ops appear to be in the BGG Medium weight. My lightest to heaviest favorites but I enjoy a lot of others also:
Light:
The Crew - 2.03
Forbidden Desert - 2.03
Medium:
Pandemic Fall of Rome - 2.45
Atlantis Rising - 2.46
Heavy:
Commissioned - 2.8
Good games on the list. I really need to get commissioned played.