Nobody here seems to have read any communist manuscripts. Collectivists usually consider individual ideals to spread things like slavery and oligarchies, because individualism usually means "I should have the individual right to do anything I want with my economic success, even if that includes enslaving others to benefit my business." Collective ideology (at least historically) has never promoted the idea of slavery, in fact many of the first socialists/communist were anti-imperialistic and demanded the end of exploitation of the workers.
I mean when you have a mandate called "the means of production should belong to the working class" in the collective sphere, it makes you wonder how it can correlate with slavery at all.
A better collective ethos in my opinion would be something like: -100% slavery tolerance, 5% happiness bonus to all citizens, -10% food consumption.
Individualism would also be: +100% slavery tolerance, 5% increase to energy income, 5% increase to mineral income.
When I made an anarcho-communist society for example, I made it fanatic xenophile with regular materialism. This allowed me to select direct democracy which I then upgraded to >>Subconscious Consensus<<. The word seems pretty collective to me, if everyone has the equal representation to vote on everything that happens in their lives.
When I made an empire similar to the soviet union, I chose xenophile (bear in mind that even though the USSR was very oppressive to it's people, things like racism, homophobia, misogyny and bigotry in general was looked down upon) militarist, and materialist and then selected Despotic Hegemony as the government (I did think about making it a military dictatorship, however I see the soviet union more as a bureaucracy than a military dictatorship).
