Well, if I were going to include these ideas in this mod I am not going to do, I would have to stipulate that these cultural differances be slight, and have little effect other than maybe "flavoring".
I wouldn't want the Shaman warrior priests or whatever they are called able to convert entire army units(ships) at a time to change sides in the middles of a battle.
Otherwise we would get all bogged down in trying to balance the various racial traits and we would never not get the mod done. I wan't to have this mod not done fairly soon, so that will require keeping it as simple as possible.
Geoschmo