I kinda got a theory on the Franco-Iberians. I think Krajzen had the right idea about it being a Neo-Frankish empire.
Come to think of it, the faction is Franco-Iberian. What are some of the first things people would think of when it comes to France and Spain that these two have in common?
Catholicism and their rather militant history when it comes to religion.
France had Charlemagne and his wars against pagan Saxons, the crusades, Hugenotes Wars and Joan d'Arc.
Spain had it's reconquista, inquisition and missionary actions in the Americas.
These two combined could mean that Franco-Iberia is going to be the militant religious zealot faction of BE. We know that the Kiwithans are rather religious but they don't seem to militarily focused.
It possible that the effect of the Great Mistake on Western Europe was a radicalization of religious activity and the people seeking protection&salvation in god, seeing the Great Mistake as his punishment for the sins of mankind. As a result of this the entire region might've transformed into a militaristic theocracy with it's core based around France and the Iberian peninsula.
Elodie would fit into this as a second Joan d'Arc. A girl that supposedly speaks to god and is his chosen to lead the faithful away from Earth and into a new Eden on another planet. The Franco-Iberians goal would be to establish a new world for mankind in god's image and purge those sinners trying to steal this new paradise from the faithful. Whether god wishes man to remain pure, live in harmony with the new world or to transcend his human body will be the Elodie's/player's choice.