Between the crazy fisheye lens camera that could fit on a small set of sunglasses while managing to capture the facial expressions below the nose, and the AR-s

Between the crazy fisheye lens camera that could fit on a small set of sunglasses while managing to capture the facial expressions below the nose, and the AR-style translucency system to see "through the displays" - that's a whole lot of technical challenges and corresponding cost for what kind of amounts to a gimmick.