Natural indeed; VR games made with Unity are also defined as declarative trees of objects in a similar fashion. In fact, if you added a "behaviors" prop to all

Natural indeed; VR games made with Unity are also defined as declarative trees of objects in a similar fashion. In fact, if you added a "behaviors" prop to all of the React components in this system you would essentially have a basis for porting Unity-like scenes pretty directly (maybe even automatically).