Which aspect of VR technology, if improved, would lead to the greatest improvement in VR experience?

  • FOV
  • Latency
  • Resolution
  • Refresh rate
  • Blurring of unfocused objects
  • Comfort of the headset including weight
  • Battery life
  • Something else

What exactly I mean by "improved" is somewhat open to interpretation. But let's say it's something like getting 10% closer to near-perfection.