Sounds an obvious question doesn't it but each of us has different needs be it racing games, fps games, medical, productivity etc.
Personally I need High-res VR collaboration so I can liaise with clients around the world, show them my actual screen on a huge display and be able to chat to a team about changes to projects I work on. Currently you have subscription websites like http://frame.io/premiere or BigScreen that help you do this on monitors but VR can change that on a massive scale.
To do this effectively we would all need as high res VR display as possible, it needs to have a great colour gamut (my main projects these days are graphics based), it needs decent noise cancelling microphones and all our broadband needs to cope with the increased streaming demands. Roll on the Pimax 8K-X
So, what floats your boat?