One of the biggest mysteries of the main series games is that 9 generations in they still don't have voice acting with minimal exceptions such as the player character grunting in Legends: Arceus when making an impact or dodging, but this is removed in Scarlet and Violet. I started playing Detective Pikachu Returns which I got for Christmas and the way voice acting works is interesting. It has cutscenes which are fully voiced either while advancing the story, meeting a new character, or just talking to Pikachu. Then in the overworld, there's some one liners, grunts, Pokémon cries, and other sounds used when initiating a conversation while the full conversation is just text. I feel like if they ever add Voice Acting (maybe in Generation 10), they should take after Detective Pikachu and have fully voiced cutscenes and short quips when talking to a character in the overworld. Of course our protagonist could remain silent like they always are or maybe they could give several voice options to choose from or a single male voice and a single female voice. They should also bring back the grunting from Legends: Arceus if they continue with the open world formula. And of course people who don't want voice acting can turn it off like the talking flowers in Mario Wonder. And finding actors shouldn't be too much of a problem as they already do it for the anime and Masters EX. They would just be finding the actors ahead of time.
What do you think? Should Generation 10 add voice acting? If so, is Detective Pikachu a good template?