From the options, it's not even close: motion controls. The hybrid nature, awesome as it is, doesn't affect gameplay experiences per se. Motion controls changed the way we would perceive playing a game and it's a shame that it lost the battle to the more "traditional" style of gaming. But if VR keeps improving, it will play an essential part in that.
My 1000th post: https://gamrconnect.vgchartz.com/post.php?id=9368779