Improvements for the DLC from CK2, which has just one culture, one religion and 32 events. The Sunset Invasion mod for Crusader Kings 3 beats its predecessor and continues to improve.
The important point is that you are an independent ruler who has a certain relationship with the empire invading your lands. This relationship is similar to the mechanics of Bioware and CK2: Jade Dragon. Your actions will determine whether the residents respect you and whether they like you.
Different paths open before you. For example, obeying all the demands of the residents will bring great friendship, but respect for you will diminish.
As the story unfolds, you will be able to get new interactions with the inhabitants on a friendly path. Whenever possible, new content will appear in the modification.