The French Terror would make a FANTASTIC setting for an AC game. If you want a list of Templar agents to kill.....you cannot get a better list of targets than Robespierre's Committee of Public Safety. They basically invented the modern totalitarian state and butchered thousands deemed "enemies of the revolution".
Robespierre has to be the main villain. He fits the profile for a Templar Grand Master perfectly.
Just finished a class on the French Revolution a few months ago and these were my thoughts exactly.
That would make a looooot of people angry. Robespierre's role during the Terror is subject to debate, Robespierre himself is subject to a lot of debate. This is not really the place to discuss french history but it's pretty shocking to me that people are taught that he was a tyrant without being presented with the many other sides of the story.