It'd be interesting if Pokemon leaned MORE into the utopia side of things. The world is peaceful enough that kids generally leave home at 10-15, spend a wandering from city to city on foot or via public transit, earning cash by having training matches with adults, figuring out how to survive on their own. This is a fundamental aspect of their culture, the early stages of job training/job selection among youth, and a way for people to leave their hometown and experience life in other areas.
Just, what's that like, mechanically? Presumably there's hostels where trainers on the gym challenge tend to stay. Are there restaurants with a discount on meals for trainers as a way of giving them cheap food? What does it look like when you have ten 12 year olds under one roof, all with pre-existing drama, all preparing for a sports match the next day? I can see all sorts of interesting stories/a day in the life sort of setups that we really haven't seen because they're afraid to look at the details too closely.
Also I just realized that this whole deal sounds like when 18 year olds take a gap year before college and backpack across Europe or follow a band on tour.