Going based on what Will Smith (the guy who runs The Foo Show) has said on various podcasts, a heavily stylized, low-poly look works well for VR since there isn't as much of an uncanny valley and it substantially lowers the hardware requirements. Superhot, Firewatch, etc., are good examples there, and can be tuned to require less processing power to run.
Remember, there's already GearVR, and that runs off of a mobile phone.
Remember, there's already GearVR, and that runs off of a mobile phone.