Yup. Destiny is actually pretty brutal. Dregs are vandals with their lower arms amputated just to show lower ranking. Hive wizards actually would capture guardians and...peel...The light out of them. The only way I could describe that is peeling off their flesh, but on a much deeper and horrible. The Vex are just simply sociopathic robots, I don't really need to go into detail there. The Cabal are likely being led by destiny's Caligula, and when they argue they actually physically abuse each other to show who is right. Also, probably the worst of the worst are these two guys I forget what they are, but one is like all white and the other mostly blue? Partially blue? I can't really remember it's a little hazy, but the white one holds pretty much all the knowledge in the world but won't let anyone know. And the blue one screws you over every chance he gets, but holds a monopoly over you so you can't go anywhere else.

I actually didn't know that about dregs. Real interesting. I think another brutal thing is the Thrall going through a terrible, painful ritual to become an Ogre.

That's only speculative, I think it's accurate, but still. It also leads into female acolytes become wizards, and male knights, because all wizards are female. There's also hints at smash civil wars between fallen houses. Mainly because of the lost battle of twilight gap, and also likely because the failed raid on the reef.