I'm okay with that, but at the same time they failed to embrace the sheer chaos and opportunity the French Revolution had. At least ACIII portrayed both Templars and Assassins ultimately being swept into a conflict bigger than they were, and showed a correspondingly chaotic conflict and alliance between the two groups.
In contrast, the French Revolution is actually downplayed and even sort of dismissed as ultimately being a master conspiracy by largely original characters with shallow characterizations. This should have been a setting where both the Assassins and Templars find themselves adrift in a desperate city with so many heroes, villains, factions and fanatics that they'd have to change. We should be avoiding Fouchet's secret police, cheering for Robespierre one minute and running from him the next, toppling the Ancien Regime because it's the right thing to do, then striving to save those nobles who don't deserve the fate some have in store for them.
In my opinion, considering the fun ACIII had with the Assassins and Templars in the American Revolution, it's depressing how formulaic the conflict was here. Unity would have meant more if Elise and Arno had a professional alliance (kind of like the one Haythem and Connor had) as well as a personal one, and it would have been much more satisfactory to have Napoleon gain the Apple in a major setpeice, instead of in a background event. Instead, we got a stagnant and boring Assassin group once Bellec and Mirabeau were dead, and too tidy of an ending.
I just think they seriously dropped the ball in terms of scale for the plot.