I particularly like the new Mapped Route Parameters.

❌ /show/{id}/

✔ /show/{id:document}/

For multiple entities, it’s cleaner and more beginner-friendly than using the #[MapEntity] attribute (which is still an option).

And imo it’s a good move to deprecate “not passing the mapping” even for single entities. With the mapping the behaviour is more intuitive and “feels” less magic.