Spoiler:
Let's recap the importance of the Sand Snakes to this season. First, they killed some sea captain for no real reason. Very intimidating. Then they plot about how to kill a 16-year-old princess. Then they manage a tie against 2 fighters, one of whom is missing his sword-hand. And then the youngest of the bunch bears all to allow a poison to work a bit faster. How did the producers think this would make the audience like these characters?