1) AR seems to help in real world situations vs VR which actually makes you feel vulnerable due to lack of vision and impaired hearing of what is around you.
2) VR also has the issue with physical issues with nausea and 10% of people with lazy eyes or other optical issues that make them unable to see 3D clearly.
3) Star Trek Holosuite is AR and that is my dream one day.
4) If Wii motion controls didn't continue their popularity how will making a helmet make that physical exertion more appealing?