Also, Ols. Are we using the Celtic faith revamp from superskierpat's Ancient Religions mod? He seemed genuinely pleased we mentioned it. It's probably the most detailed, in depth take on the faith.
We will. Most likely we'll try to integrate it for 0.99 and see if any teething problems arise. When that mod was being made I hinted at including it, so I suspect it'd work well given that it may have been made with this mod in mind.
If someone wants to edit defines to create the best troop balance it'd be great. I think troop numbers should definitely increase over time, at least for the Saxons, to simulate settlement and population growth. It should halve in the aftermath of the Plague of Justinian though.