It was underutilized. I'll get on my soapbox here and state that the method for getting back into the sky wasn't great. The Goddess Sword (also the SKYWARD SWORD) was first hinted at as being the key to the surface. However, you get the surface by diving and get back up by being launched by a statue. I think the Goddess Sword would have been better if you had to hold the sword up, charge a Skyward Strike, and use the resultant energy to propel you to the sky, instead of a rock.