I have to admit, that I found the recent DLC very unimpressive. Then I wondered, why there never has been an "Independence"-DLC. I am a great Fan of the old game "Colonization". And the ultimate endgame challenge was the Independence War. And you either remained a Colony, got Commonwealth Status or went full Independent. This would have been a good thing for Mars too. Establishing an Administration, Arms Industry, persuading Colonists and eventually go to War with Mother Earth.