From the videos and conversations I've seen surrounding Let's Go, it sounds like one of its strongest points is also a strong point of the Detective Pikachu trailer: it gives Pokemon a stronger presence/role in everyday life.
It really sounds like Game Freak did work to make Let's Go look like what we, as ten-year-olds (or whatever) imagined Kanto to look like. I'd normally be more skeptical about such a tall order but given the near-unanimous consensus from these reviews, I don't think it's wrong.