[@Celeste] The sheet is looking great, a lot of great details and thought put into it. 

I'll point out that out of all the kingdoms, the Riverlands probably have the most diversity of arcane stuff going on. You got Faith of the Seven followers with abilities, you got the Children of the Forest and the Green Men on the Isle of Faces, you got pockets of Red God worshipers, you got rumored witches and blood mages in Harrenhal, and you have all the eclectic mystical or shamanic beliefs from different groups of Essosi. 

I do think it's somewhat off that the Tully kids would be drawn to R'hllor more than the Old Gods or something. Because R'hllor often has the most fanatical followers. See human sacrifice lol. The temple in Volantis even has slaves. I'm also unsure if you can even use R'hllor magic tricks if you don't believe in the god. 

I do like the idea of her going on a foreign tour. If you think it's kosher, perhaps she's also friends with a lot of the Second Generation characters, namely the kids of the characters from the series proper. I could see her having gone on that foreign tour with Aemon or Daenyra for example, and perhaps some of the other Second Gen. 

I also like the Maegyr bastards, could have some interesting implications once Essos comes into more focus. 

For future reference I think I'm going to have it so that the Essosi immigrants have enclaves of settlement throughout most of the kingdoms, mainly in the cities, but the largest numbers of immigrants who are settled in their own agrarian communities will be in the Riverlands and mainland Crownlands. The Crownlands get much less strife both because the Iron Throne keeps a firm hand on everyone, and the Riverlands are just generally the focal point of all the shit going on in Westeros. 

I'm thinking right now there isn't much, if any mixing, and most of the immigrants keep to their own towns or neighborhoods in the cities. And most are pretty poor, with some skilled artisans, craftsmen, and merchants who are better off.