None of this was shown off in a gaming capacity. Until they demo controlling a game, I wouldn't assume they are designed for anything other than something​ like Paint VR or experiences that don't have you doing some kind of complex movement.
Not that a certain number of buttons aren't useful, but Halo would be a perfect example of a game that wouldn't need many. Crouch? Do it in real life. Switch weapons? Reach to the area they'd be stored logically on the body and use them. Melee? Do the action IRL. Reload? Once again, gestures. Use a scope? Look into it. See a trend here? VR kind of redefines most FPS actions beyond needing a button to do it. The end result is you only end up needing a few - mostly for movement rather than interaction.
Perhaps this is only for simple things, but that just makes me ask "what's the point?"
Do you really want to spend hundreds of dollars.... to paint?
Real-life actions are only fun for a while, then they get really old. There's a reason "comfy couch" is an argument. Do you really want to physically crouch every time you need to hide behind cover? Especially if you're playing against standard-control players, you'd get massacred every time.
I'm of the opinion that the VR system should be compatible with traditional games, and also allow for new experiences. By cutting out the things we're all accustomed to, you eliminate most of the fanbase.
I could be wrong, but I just don't see a game being as popular as Call of Duty if players have to physically run around the room to play.
What I want, basically, is an ARMA-style control scheme, where you can turn the head independently of the body, but all other controls are traditional. It makes you feel like you're truly in the game, but you're not handicapped in the actual gameplay.
I can't be alone on this one. Surely there are other players who basically just want a screen taped to their face to feel like the game is surrounding you, but everything else is what we're used to. Maybe I'm wrong and I'm in the minority. I just know that if I there was an Xbox controller chopped in half, and each half had motion controls (but also all the buttons) paired with a VR helmet, I'd buy that thing the moment it was unveiled.