Fr those of you keeping score at home, that's one Templar confirmed as an ally (Elise), one Templar who gets ahold of the Apple (Napoleon), one trailer where you're part of the mob attacking the old order (co-op trailer), and one where you're fighting the Reign of Terror (Elise reveal trailer). Combine all that with the Rob Zombie cartoon, and I'm thinking they're going to embrace the sheer chaos and shifting factions of the era. Which means that I'm calling that at some point Arno will find himself facing another assassin in conflict (maybe Robespierre, or maybe someone else), and assassin who's gone too far.
Now the historian in me wants to have Arno interact with Fouchet (head of the secret police) and Talleyrand (high ranking minister). Both men were known for somehow surviving each coup and revolution and always looking out for number one, and anyone who's seen the Black Book movie knows Fouchet can be all sorts of slimy untrustworthy fun.