Thanks for the answer!! I'll have to implement my own attachment system until the next version of macOS, ack… Since I'm a bit of a SwiftUI beginner (I'm more versed in AppKit and UIKit), could you tell me roughly how you'd position Text("overlay") relative to some 3D entity in the scene? Perhaps... a list of SwiftUI elements with a mapping to components, that I ForEach to position using .position(x:, y:) using an Observable list of positions that I extract every frame using an ECS System?

Feedback submitted in anyh case: FB16085161. Thanks for the detailed answer and the offer to spread the radar internally!