Unlike games such as Hearts of Iron 4 which is basically a scenario mode where world war will eventually break out, or Europa Universalis 4 / Victoria 2 where nations are clearly defined and feudalism no longer a thing so you can focus on colonization and becoming the dominant power of the world, in Crusader Kings 2 I have a hard time seeing what kind of character picks would make the multiplayer experience fun, because you play as characters not nations.
