Aww…you posted this just at a time when I was really swamped with work. 
Anyway…I like the Xaos chapter thus far. A pity I won’t see Vigil with my main mc though since I did the Carles and not the Wolfbait intro with as the Wolfbait intro always seemed more geared towards the aristo background as an opportunity to question the cruelty and display some bland liberal piety.
Now me being late to the party means a lot of the points I was gonna raise have already been raised by others but about Sojourn specifically did the Brauracha being roving nomads even before the cataclysm actually build those places? Or did they have a relationship with the city (state) dwellers of possibly older civilizations already in the region akin to what some of our historical hordes had with some more settled peoples, that they provide trade and luxury goods and pay a tribute to the great Khan but were otherwise mostly left to their own devices?
Also will the mc ever learn how to make the Xaos storms themselves? It’s great Cerlotta is close to figuring them out but that doesn’t help my mc very much. Still the opportunity to learn from an actual abhuman was too great to pass up and I wonder if my mc can use that autoplektosis to perfect his own human male form, more like this, than work towards animal traits?
Lastly about Cerlotta when she is arguing mages should give up power I would like my helot mc to be able to retort a bit as he does think that is a position borne of centuries of privilege on the part of the Hegemony’s theurge class:
Particularly now that he knows more of the Magi of Halassur that last sentence would ring even more true that without at least some real power magic alone does not necessarily make for a life worth living.