May I add suggestions for where this mod may go in the future? Specifically regarding the Border Princes.
As a faction they seem awfully underdeveloped and underpowered. Maybe this is canon, I don't know, but compared to a lot of other factions they don't have nearly as much of a powerful, well-rounded military. I envisage them as a loose confederation of independent entities that need to pool their resources and military strength to survive. Because of this I think they should have unique mercenaries as their special units, and access to diverse artillery. What do you think?