That what I meant, a built in calibration arm/camera unit plus easily replacable panel w/o driver unit might have been a killer feature. But replaceable and Apple don't mix.

To me this looks like a overengineered consumer device, with insane macro-scale part count and failures/uniformity issues just waiting to happen. Besides local contrast issues with in a LED driven pixel area and the borders between them. You can do this, but comparing it reference class seems quite the claim to live up to.

The $40k Sony device mentioned is OLED btw.

https://www.apple.com/105/media/us/pro-display-xdr/2019/1e43...