Many of us with full body tracking tend to struggle with our viewpoints when we do things like sit, lean back or lie down. What winds up happening is the viewpoint keeps going back while the avatar doesn't and we wind up being able to see nothing but the inside of our own necks. Having a simple X,Y,Z adjustment system to move where the viewpoint is would resolve these issues without having to open up unity and adjust the viewpoint to a location that doesn't make sense just to compensate for it.