These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Better on DVD: The theatrical version is a mediocre action film, at best. The Director's Cut edition restores over 45 minutes of plot, and is a far superior political drama/war movie, and explains a lot about why Balian is such an effective leader.
Canon Sue: The main character, mostly by making everyone else Too Dumb to Live. The director's cut explains that he fought in several battles in the past and used to build siege engines. A brief scene in the directors cut has him designing a fortification centuries ahead of its time in style.
Complete Monster: Raynald de Chatillion is a truly nasty and vicious knight. Raynald leads attacks on innocent Muslim villages in orgies of rape and murder in order to provoke Saladin into battle. He has multiple captives beheaded in order to enrage the Muslim leader. When this fails, he personally kills Saladin's own sister. Raynald represents every dark stereotype about the Crusaders, and is so terrible that Saladin personally kills him once Raynald is taken hostage, as Saladin had vowed to kill him if Raynald ever fell into his hands.
Eva Green willingly gives up the throne for love. Fast forward to Camelot where she stops at nothing to try and become Queen.
At one point in the Director's Cut, Balian throws a rock at a bush and it sets a blaze, with him balking at The Hospitaller "That's your Moses". Come almost ten years latter after KOH's release and Ridley Scott is doing a movie about Moses.
Mary Tzu: Balian is often accused of being this by people who haven't seen the Director's Cut, because in the theatrical version he is presented as a humble blacksmith who seems to inexplicably have a lot of knowledge about war. The better-received Director's Cut restores deleted scenes in which he explains that he was an engineer who worked with the army and built war machines before retiring to a simpler life as a blacksmith.
Moral Event Horizon: For Reynald, this would be is his aforementioned mass slaughtering off innocent Muslims just to provoke Saladin, peaking with his murdering (and also possibly raping) of Saladin's sister.