they need to make movies about:
Charles the Hammer
Gengis Kahn/the mongol conquest of Eurasia
Attila the Hun (a real movie about him/the huns)
Theodoric the Goth?
The ENTIRE 100 years war (or maybe a prequal to the messenger, it could end at Joans arival and a sequal could finnish the story, using the same actors would be cool)
Alexander the Great (if it's been made, make it better, b/c I've never hear of it)
Napoleon
El Cid (should make a great movie if what ES put in the campaign is accurate)
The vikings
The norman conquest of the (lower) British Isles (I'm not sure how much movie there is, but it'd be fun to watch)
The Japanese invasion and destruction of the Shoalin Temples (but use REAL Chineese and Japaneese Martial artists, not some crappy grade B, talk, attack, talk attack, crap)
The Aztecs and the Spaniards (make it REAL not some, steel and gunpowder and God's will won it Bull crap, it should start with Columbis landing and then the next seen should be Aztec life, with MANY people dying of diseases, then the movie starts and plays out with no big time gaps from) They'll need some Aztec garland and Non-Garland (a wake of severed limbs and torsos left behind in a vilage that became a battle feild) wars before Cortez shows up.
And maybe even a Roamn-Britainan movie, about how the romans came, built Hadrians wall, the unamed King (Aurthur) whose name should never be spoken or seen in the movie, the revolts etc...