Ey, Sini, where's a sane placement on the map for severe volcanic faulting? Ashlandy stuff, Morrowind-alike. Ideally somewhere that makes sense for that geography and that also might've been a plausible imperial centerpiece & hold-out for a formerly much larger state. I'm thinking Khumer has been a relative constant through antiquity as the codifier of asshole sorcerer kings (or supposed sorcerer kings) having ups and downs between superpower status and dogged slaver rump-state. Lots of coalition wars of containment, successful or failed, that sort of thing.

Editing in retrospect, I think I see three good places; east of the southwestern delta, in the spine by Oxfreight and Jukku, and in the far northern mountain hideaway. I'm leaning heavily towards the southwestern delta mountain spine, south of Arman-Arhus and east of where Cap'n's sorcerer-king killers are probably getting situated, so I'll claim that for the time being and keep the other two prospects on backup in case of any necessary shuffle-around.

For custom pro & con, I tried to make them as thematic as possible, and broad reaching rather than specific practices. Something to give life in crunch to the overall fluff.

By Terror Thou Shalt Wage War: There can be no doubt that as a military entity Khumer is efficient and brutal, but further so as a sociopolitical one. While few men would willingly subject themselves to the horror of living in Khumer's lands and systems, to throw themselves in chains under those exceedingly cruel men, yet fewer would like to face the cruelty of the Khumerian highborn or their much-repressed slaves. Better to go into captivity amongst exceedingly cruel men than be eaten alive by them, or vice-versa. With little or no fight, some states in history have become vassals to Khumer when faced with the inevitability of conquest to spare themselves the butcherous ruin that would follow refusal to submit. Although such days are long past with Khumer's sorry state and the ease of successful coalition, soldiers will nonetheless face wildly fluctuating morale and force organization when faced with the Khumite question; an organized formation might be feeble and giving, or an unbreakably, rabidly fearful mob- fighting as many more men on the personal level- might lose all cohesion. Either may serve as wheat to thresh for the Khumites if the enemy commanders do not retain control of the situation.

O Daughter of Babylon: Conversely, the terror of Khumer and all its iniquities leaves few men alive to speak any favorable thing, to have any good notion of it. It is a black-hearted man, either by malevolence or fear, who would make any deal with the priest-statesmen of Khumer. Legitimate diplomacy with that black realm is ill found in this era, and even secret overtures are few and kept as careful secret. The Khumerian highborne as a race are rarely considered humans, more often as demons given flesh, both for their stature and the stature of their moral monstrosity. Therefore, Khumer can expect an absolutely frigid political climate, if it is not warmed by fire and blood.