KatDEO
A little idea: Since DeoVR can use those space for Alpha Passthrough, maybe it can also be used as resolution enhancer.
Human eyes mostly focus on the 60 degree circle area in the front, which is most important for 3D vision and details. So if you can use those extra 40% of pixels and put them in the center, then the 3D video will have much more detail in the area we usually look at.
It will be like a 200% resolution jump in the center, with the same resolution cost.
So maybe think about it ?