Nice. :-) I see borderless windows at the flip of a switch. The window is real and there, but you can set the rest of the wall to look transparent whenever you want.

I say skip right to holograms. Things like 8k 2D is mostly worthless because our eyes don't care about 4k vs 8k enough. We need other senses to get involved. Like a TV that produces smells would be a lot more immersive than just 8k. A good sound system will be more immersive than going from 4k to 8k and the tech looks far more prone to failure.