"As time progressed, we wanted to provide our customers with even better Maps including features such as turn-by-turn directions, voice integration, Flyover and vector-based maps."

There's the MVP for Apple Maps. Doesn't mean it's the must useful for everyone, but it's the feature-set that Apple set it's sights on with the new Maps app.

I do think it was stupid to punt on business listings and use Yelp, but I haven't heard of any better options.