About this, less hip angle, and with the arms about the same height as the torso (and as such necessitating a split keyboard). For a suitable arm angle you need the head to be higher, which requires some closely fitting head support, which has to even out the pressure on your head. Think a recliner with armrests so your arms can most comfortably type/mouse, and a foam around you neck so you head doesn't roll off to the side. The screen is angled at about 45 degrees downwards, to match the head so you only need to move the eyes.