A vast majority of video games, I'd argue are either set in the present, a dystopian future, the near future, a fantasy world or during World War II. Why can't we get a bit more variety? What historical periods would you like to see re-enacted?
Seriously -- what about World War I? What about the French Revolution? What about... well, anything really.
That's what made the Assassin's Creed series so great: accurate portrayals of pivotal moments in history. I'd love to see a bit more variety in the settings and historical periods of video games. What would you like to see?