With them moving to a home system for the first time, it's probably a good move to not overextend themselves on the first go. They can focus on refining the base of the game without worrying about new regions, characters, Pokemon, and balancing the meta. They can take the familiar story, polish it up, and get used to developing on the Switch. I think this is going to be much more of a hybrid of the core games and Go that's sort of a taste of what's to come. I personally have wanted catching mechanics like Go, and motion controls is even better, but not at the cost of wild Pokemon battles. I trust them to make a good game though, it will probably be fine.