I don't think American accents are necessarily out of place in medieval CRPGs. The standard American accent can have a very gruff, earthy sound to it that suits drifter and labourer types. And a southern American accent is perfectly fine to define a unique community, like Xoti's. It's the more whiny, Mean Girls, Big Bang Theory American accent that can completely break the immersion. I'm not talking about the Valley girl accent either, there is just a way that young Americans sound sometimes that is very whiny. I think this is why so many people are complaining about the Narrator for example.