How is the script coming along? Have you finished the arsenic poisoning plot twist or is that going to be DLC?
1. I'm going to reserve actual judgement for after seeing how they act, but going off of picture alone I'm going to pick the grandma lady second from the right. Elderly people are rare in low-tech / dangerous environments and they typically have a unique long view on the state of the community. Plus she looks nice and wise.
2. I read to explore new worlds so unique settings are a + as long as the environment doesn't take first billing over the characters. I've never really liked having a character dump exposition. It never really feels natural for two characters to go into a long explanation about the cultural norms of a society that they've lived in their whole lives. Pyre does this thing where characters will talk and any time something is said that might need explanation they highlight the word / phrase and if you mouse over it you get a quick summary explanation, or you can click on it and the journal opens up with a longer explanation of the in depth lore. I liked this as a middle ground where people who care about the lore can get it without characters falling out of character.
3. Nikhil: anyone who's described as a "golden" person immediately spikes my suspicions. He's described as overcoming all odds, but his brother is the captain of his regiment so I don't know how much I trust that narrative. Also he has cat eyes so he's definitely sneaky.