Out of curiosity in order to gather some infomation for testing more players mabe some guys will help me with this question and chain of thoughts.
It will also help a lot to discuss the need or not-need of a video mode since there are valid alternatives of most usecases.
What is a VR player?
OK it's basically a 3D player but used in a very different way due much vaster difference in the footage itself (resolution, resolution ratio, FPS, amount of morphing...) and the need of modifying important parameters to get the best immersion.
I presume we can agree that watching a 3D movie at a cinema is still fun but can't qualify "immersive" anymore after anyone has tried any VR device.
Same with non-vr 3D movies on a HMD. So adjusting any settings won't be of much importance, we don't move our heads, we don't change the angle, distance of seating position to screen is mostly not changing the size significantly.
In VR though we MUST be able to edit at least some parameters in order to place ourselfs into a surrounding rather than only placing us in front of it.
Power DVD lacks of pan, tilt, zoom making it impossible to do the things mentioned above and cleary dequalifys being called VR Player.
Reading up on that reddit discussion would help me as well. could you provide a link for me?