Just an idea i had some time ago, but never cared to post.

The episode that happens in the capitol, where Killy meets Cibo.

Could you imagine that this city is controlled by silicone life enslaving the human inhabitants ?

Its probably because the episode happens early in the Blame story and the oveall story wasnt that consolidated, but i think the boomerangblade-lady and some of her minions looks a lot like siliconelife

The SC hate all humans and are like parasites, so why not take over a human settlement and enslave all humans ?

I´m probably wrong but i like the idea.....

Well, they hate humans, so they probably kill them and not enslave them.
Plus they are parasites to the Megasphere and not to the humans, which are themselves parasites.
So what purpose would it have for the silicon life to enslave some humans...
But if the humans continue their research on howto reach the net-sphere it would be interesting for the other silicon-guy in the later chapters who tries the same. Maybe the humans aren't enslaved but used without knowing to research the net-genes...

In my opinion it is just another different human settlement. Remember that all the settlements shown had no real connection to the rest of the megastructure and even evolved differently.

The governing body of the "capital" just happened to be that corporation. And they simple had the tech to alter bodies and so on. That boomerang lady was prolly just a cyborg or robot. If their tech is derived from the orders old technology is unsure. It may be, it may not be.