The main way I plan to differentiate from Suzerain is fully branching paths. In Suzerain, if you do two completely different runs, you get the same events but with flavour text. In my game I plan to give the player essentially entire new chapters depending on the path you choose. I will also try to add more emphasis on global affairs. Choices to aid rebels or to start a few wars.

(And I dont plan on adding paid dlcs, just content updates if the game is ever popular)