It's 45 views across a total of 50 degrees, that's 25 degrees off-center left and right. And there's only a single vertical angle. What gets displayed in those views is 100% implementation-dependent. There's no standard for how "deep" the objects should look, and there's no standard for the vertical angle either. So whether it will look good on a wall is content-dependent. I suspect that most content being made specifically for the Looking Glass will have a downward viewing angle in mind, as would be natural for having the device on a desk in front of you.