If i understand correctly, the current capabilities dont allow for an app which would work in the shared space but also have access to the full environment? For example, a virtual pet app in which a pet could move around the room while you do other things (browsing internet, watching a movie, whatever...)
Shared space app with full environment access
Correct. Apps running in the shared space can display windows and volumes but not immersive scenes.
Only when an app is ”immersive” can it get access to world tracking information required for a RealityKit character to navigate the space.