Way of Life DLC adds character focuses. Translation: an incredible amount of events and flavour to enhance your roleplaying experience. If I had to pick one DLC that could be called "essential", this would be it.

DLC introduces extended features that have a significant impact on the relationship between characters in the game. The new content gives the player a greater influence on the behavior of the ruler - also in aspects of personal life. It depends on selected specializations that provide unique bonuses and faster development in a given field. Thanks to the addition, the heroes of Crusader Kings II can engage in romance, duel, spy and interact in many new ways. The game also features many diplomatic options referring to more or less official relations between characters.

This DLC is much cheapers than most other Crusder Kings: II DLC, but it is very much worht it. It helps to flesh out your ruler's life and add some basic mechanics such as "seduction" and setting an ambition of sorts. Recommended for those who are looking to seduce whomever they want in the game, including the Pope.