Developers CD Projekt RED are considering something for the upcoming Cyberpunk 2077 that I really hope makes it into the final game: the idea of having people in the game all speak their native tongue.
An example given by CD Projekt RED's Sebastian Stepien is that, even if the game's set to "English", if you come across Mexicans in the game, they'll be speaking Spanish. If you wanted to understand them, you'd need to use a "transplanting implant", and the quality of the translation you received would depend on the level of the implant.
Some might see this is a pain, but come on. The gains you'd get in immersion in the world would surely outweigh that. I can't be the only person on Earth to think it's weird that everybody in Western gaming either speaks English with an American accent or, if they're foreign/evil, English with a British accent.
Be nice to see some genuine variety in there. And, dare I say it about a game called Cyberpunk, a little realism at the same time.