I have always wanted a COOP hitman mode but knew it would never make sense lore wise so I came up with an idea for a COOP mode that could fit well within the story. What if in the COOP mode the ICA is testing out a new program where hits would be performed by squads. The ICA is putting their agents to the test by making them walkthrough 47’s previous missions in a simulation/reenactment to see if they could do just as good or even better than the OG himself.
This way redoing a mission with friends will make sense as you are just running through a simulation and doing stupid stuff with friends would also make sense as this is just a simulation and the risks are much lower.