This can't be overstated. You can achieve really convincing presence with nothing but flat shaded primitives, but the effect is greatly diminished if it appears

This can't be overstated. You can achieve really convincing presence with nothing but flat shaded primitives, but the effect is greatly diminished if it appears there's something external in your field of view. The other bonus here is that with the huge resolution bump, other use cases become available. Reading text in VR is tricky with the shipping headsets right now, but with this, a virtual desktop could be realistic.