I personally wouldn't mind seeing Stephane Chapheau considering how he's discussed France's state with Connor, and how he wants to return someday. Perhaps the French Revolution could be that return? He doesn't necessarily need to be apart of the main story, maybe some side missions like liberating parts of France or maybe even that American Prisoner DLC?
We can see him in the streets yelling with the Citizens about injustice, tyranny, and other stuff. He could interact with Arno telling him about his battles in America with Connor and how he offered him to come but Connor was "Too Busy" or something.
By this, we can get a Connor mention, and what he's been up to since AC3.
What do you guys think? Would you be game to see Stephane?