Crusader Kings II: Conclave
Top Critic Average
Developer: Paradox Development Studio
Genres: Simulation, Strategy
Keep your council happy, and the mighty vassals will resist the pull of faction and civil war. Dismiss their interests, though, and you may find yourself trying to hold together a council at war with itself.
Balance councilor skill and power to keep your dynasty safe and strong. Ignore powerful underlings at your peril, or simply buy their loyalty with favors. Conclave makes the royal council a force unto itself.
Crusader Kings 2: Conclave - Release Trailer
Although Conclave does require an unusual amount of hard work on the player's part, as well as the patience of a saint, the expansion is still mostly worthwhile (many of the bad changes were in the free patch, so there's no way to avoid them without reverting to a previous version).
It's really sad to see scores slowly slide down like this, but with Crusader Kings II seemingly starting to get stuck in a rut due to a lack of a desire to release things like new maps (hint: China/Japan or a fantasy-style alternate campaign), there wasn't really anywhere for Conclave to go that wasn't 'sequelitus.' As a content patch it would get an A, but as an expansion? Sadly, not so much.