I really like the world building of this quest it really makes sense and is interesting. I'd love to see more about stuff like how slaughter artists operate in Cradle. Different people have different views on Slaughter Artists and that's effected by their culture, their origin, their rankings as well as how that Slaughter Artist meshes with their sensibilities. People could react to a slaughter artist like oh this is a soldier, hunter or butcher or they could react oh no it's an evil monster and there's a wide range of reasons for that. For example someone with a historically unpopular path isn't given the benefit of the doubt, see Lindon or Bronze Serpents. Also there is the nature of someone's path and how they operate as a slaughter artist looks at the Assassin who went to Destruction - Death and full on murder for slaughter arts. Stuff like that can heavily effect how someone is viewed and treated.To be fair, this quest has stretched the idea of slaughter artists quite a bit from what we see in the series.
Also speaking of how roles are viewed and treated that makes me curious how people like Refiners, Scripters and Soulsmiths are treated and how that interacts with Rank and if they're a slaughter artist. Refiners, Scripters and Soulsmiths are treated as respected professionals, Keras hasn't really gotten a look at how Soulsmiths are treated by they've seen the pinnacle of Scripters and Refiners in the Empire in the form of their patrons. A talented crafter's time is heavily valued and in demand because their skills are extremely useful. And even a less skilled and less potent ranked crafter still has very valuable and vital skills that sees them get a lot of work even if they're not sought out for the best commissions. But I'm thinking that a Slaughter Artist that is a crafter would be treated more of an Evil Scientist kinda like the Blood Sage.
War in Cradle would be very scary, there's a reason the whole culture of facing people on your advancement level was created and while that's not uniformly followed when the knives really come out the appearance of it is usually maintained for various reasons. Large scale battles having Ruler techniques being common makes sense given how they're very good at large scale damage. But there's also the fact that higher ranks are a big deal and that while people can punch up its tricky to do so. Underlords are used as power projection tools and weapons of war by the Empire for a reason.It's interesting to think of how a full scale war would work in Cradle rather than the more small scale dueling and skirmishing we mostly see in series. I imagine a large battle would have a bit of emphasis on ruler techniques given they're the go to aoe effect and how a large group of sacred artists would generate large amounts of aura in their fighting. I can picture entire teams of death or blood or sword artists on each side wrestling with each other for control of the ambient aura given off by the fighting so they can annihilate the enemy army with a massive attack while strike teams try to assassinate them to gain the advantage. It'd add another element for why most sects all tend to follow the same general path rather than branching out too far, since a hundred fire artists, like the brightflares maybe, all working together is going to create incredible amounts of fire aura to use against their foes.