yes muslims but no guns makes it a pretty narrow timeframe
you should put less emphasis on historical accuracy and focus on making it as fun and offensive as possible.
I see issues with Balance.
ThePalestiniansMuslims will have great rock tossing skills, the Jews are masters of the sling, (not to mention the Arc), but Christians are only really good at turning the other cheek, assaulting bankers, and hanging around. Guess it depends on what faction is the most popular.
Will we be able to infiltrate other factions? Jewish Zealot sounds cool but I need to know I can work all the angles.