What is that feature?
I've been all in on Apple Maps for years now. It's been excellent at route planning and navigation, but it still lags behind Google when it comes to POIs (points of interest). I'm still hitting on too many occasions when I have to look for a restaurant or something on Google Maps and then use Apple Maps to navigate to it.
My other big wish list item is offline maps which can be super handy in areas of poor internet connectivity, or when travelling.
Still, I'm very impressed with the improvements to rendering and detail, and I use the Guides feature heavily to keep track of destinations of all kinds.