While the ability to watch 3D content on the AVP is cool, I don't think it's going to be enough to convince a lot of people to come off the fence and buy one especially at $3,500. Apple will probably charge a premium for 3D movies as well.
I am hoping in the not too distant future, the AVP (and other VR headsets) will offer the ability to virtually "attend" live events like sports and concerts. That would definitely get me to buy right away. Actually thinking about it, the events wouldn't even need to be broadcast live. I would still be interested in watching pre-recorded events in 360 degree VR.
I'm dreaming of being able to watch the Super Bowl, the Masters golf tournament, U2 at the Sphere, and other similar events in 360 degree VR!