Representing ourselves in the 3D world will be the next breakthrough for VR. Moving away from joypads, keyboards and mice is the major challenge, however they do give some advantages and people are still working out how we can interact with the virtual world. Still, being able to map the real world and most importantly ourselves is key, and there have been some ways of getting this to work:
[UPDATE] Driver4VR: Body Tracking driver for Kinect in SteamVR v1 - instructions
LEAP Keyboard Demo