Class, meaning the class of a character, or in the sense that you can't have them as subjects. If it's the first, then OK, if it's the second, then why are they needed... It would also be good to create a lot of countries, and they all fight each other, intrigue, you can change citizenship (from an Imperial to a Barbarian or someone else). Approximately the plot - after the death of Magnus, the empire fell apart into many countries, the leader of the Black Tower also died, and this caused a schism in the Black Tower. The Time of Troubles began, and in addition, merchants and travelers began to talk about new, unexplored countries...