Will Kingdoms be fully modable and will the new features be hardcoded? For example, could I make Ireland have no family tree or give Norway the ability to change religions if I wanted to?
In the Britannia Campaign we know of 5 factions that will be playable, will it be possible to add (mod) other factions into this?
You will be able to mod Kingdoms the same as M2 vanilla, there won't be any restrictions from modding the original M2 game to the expansion. We are looking to include more modding features in Kingdoms as well as implementing some features asked by the community. Some of the new features (most I think) will be modable.