Fwiw, VEV doesn't have strict Pro improvements in place - we hit all our metrics (90 fps and 90 hz physics, native 1080p) without any drops or stutter on the base PS4 unit.
Still, testing on a Pro in VR does seem to lead to minor visual improvements in some of our lighting and shadow elements, and texture LOD and filtering--although I've spent so long with the code it's probably easier for me to see than anyone else. It's minor, but it was a welcome surprise.
Oh. Also loading is a bit smoother even in base mode.