The idea that ancestry choice is like everything else in the known world of the PCS still fairly familiar, but as the party investigates underground/the wilderness further replacement characters are likely to be from those unfamiliar places has a "crunch" aspect too in any level adjustment. This feels very old skool.

Obviously I think "a cosmopolitan society resulting from centuries of magic, history and trade, creates no easy racist decisions about who are good and bad guys and also gives players more choices" is a good thing.

But now I *also* think, "we have some fairly distinct differences but at the end of the day we're all semi-culturally assimilated anglophones and it's the outside world which is full of weirdness we can't easily relate to" is a very 1970s understanding of the world. Kinda gross and definitely not how the world is now.