What makes you think that would have been better?
You mean, "How so?"
But I get it. The plot sounds like something straight from a period piece. When you think about the time period of your average period piece, even if it's a thousand years off, the cultural differences that separate old timey period pieces from modern America may have a couple more blatant similarities to more medieval times. In this case, it's the story's lead source of influence: Ancient Rome.
You see, Hownos, the movie is essentially a New York peplum. The film is partially inspired by Julius Caesar and the separate Catalinarian Conspiracy involving Catalina, Hybrida, Cicero, Lipschitz...
Jokes aside, as a man who's seen more than a good deal of peplums due to mythological love and a keen interest in Italian cinema, I found the little tweaks here and there fun to watch while enjoying the Babylonian comparisons, meaning the comparisons of New York to Ancient Rome much like Babylon's comparison of Hollywood to its titular city. The special effects are likely the finest you can find at this time, but it also serves as a distraction from the story. Some say it's confusing and nonsense. Me, I say it's effing easy.