User blog comment:T42/The Gangs of Lupercal's Folly/@comment-24753384-20150624002702

Well despite its a chaos hive city there needs to be numerous 'lords' and families that fight each other in small back stabby ways, making alliances, street wars etc. and they do this to gain favour and earn something, a seat of power, weapons, people, ships, land.

You need at least one imperial deserter group that's the weakest and still despite all odds worships the God-Emperor. And they actually could become a key group in whatever goes on.

Fighting pits, where those Khrone worshippers see their best qualities all over the floor. Orks, cultists, Eldar and humans fighting eachother then they could have to fight a Storm Dragur warrior to earn their freedom.

That's my overview.

You need in my mind one family in control of different parts of the city, varying in size, and population and what they do.

And in some random encounter some form of Imperial attack or something Grey Knights.

Their my ideas