The paintings (DeviantArt, username: coricancha) are created by an anthropologist trained especially in the material culture of ancient Latin America, visual studies, and digital reconstruction – resulting in historically informed and visually precise representations.
Change is not inherently bad. It's just bad execution.
There is clearly room for improvement in the implementation of territory and capture features. Changing the default is understandable.
Mason, lumberjack, merchant, a blacksmith (profession, not a building).
Fishermen in the coastal areas. Probably a lot of other things. Women did mostly knitting, some farming and some other stuff that would be inappropriate to talk about.