The greatest justice that could ever be done in the history of video games...
Is for Stellaris to be realistic. When you start committing massed Tyrannical acts not only your nation but other countries band together to crush you. Nothing would please me more than every person who wants to channel their inner sadist to be crushed.
Sorry this is like the fourth topic on this this week and it's really started to irritate me how everyone assumes that massed genocide should be easy to pull off. It's like the CK2 forums where someone goes "all I did was falsely imprison and execute a duke and everyone is all rising up against me wtf!"