Well, fine. I'll do this. ST isn't exactly known for it's crazy plot twists, but the reveal of Byrne's identity as not only Anjean's apprentice, but a Lokomo, and realizing his wrongs and joining your side, as well as DYING, hit me pretty hard. I didn't see his conversion coming until he awoke and told us about the Compass, then I found it to be only reluctant aid. Then he gave up his life defending Zelda. She cried! And I almost did. My expression basically mirrored hers. Then everything else. While plotfulness throughout ST wasn't smooth in the least, the beginning and end were very well done, in my opinion.
The only drawback of Byrne's ending was that he actually survived. But hey, it's Zelda.
Right up there with Byrne's turn of loyalties is Hylia's identity, but both are bested by the top of Majora's Mask. I mean, as if it wasn't enough with everything else that happened--at the VERY BEGINNING, you get turned into a Deku! THAT'S what I call a plot twist!