The "Live from the Met" Gotterdammerung this weekend was wonderful at the theater where I watched it. I've heard from others across the world that in some theaters the sound was less than had been hoped for.
In Act 1, Scene 3, where the Valkyrie, Waltraute, visits her sister, Brunnhilde, for some reason I noticed better than ever before the smooth way in which Wagner weaves his leitmotivs into the conversation between the Valkyrie sisters. It adds so much to their conversation, when we hear the music add its voice to the action. For example, a character may say what they think is going to transpire, but through the insertion of Alberich, the Nibelung's curse motif, the music tells us of another factor which the speakers may not be considering.
It reminds me of how, in M6, Mahler states ("Alma theme") the vibrant love of life, only to have the music intrude with the crushing hammer blows of fate, announcing that death will still come, no matter how dearly we love and cling to life. Perhaps not quite the same thing as in Gotterdammerung, but it does show how much the music has to say--beyond mere words.