The part of CarPlay I’m unhappy with is the (in)ability to plan EV trips with charging stops. Adding charging in a good native nav interface is simple: you enter the route and it picks chargers for you if the distance exceeds current range. In standard CarPlay this doesn’t happen automatically. Presumably it could, but in addition to charging station search and planning, CarPlay would need an interface to take current battery level and some other preferences that would tune the algorithm for specific cars. Not sure if that exists, but the cars I’ve used haven’t exhibited it.