[Matrixbeast]

Why wouldn't Sonada be considered evil? We never saw any actual motivation with her.
Why would you give Tojima and Eleen the switches back? It was explained early on that the switches amplify emotions (Erin's anger being the best example. Her memory of using the switch may be gone, but not her feelings). Kijima and Tatsumori were psychos through and through.
And Leo has all the switches. It's kinda obvious any climax involving him is just gonna be him spamming them.

However, Taurus's switcher did seem like a sensible and nice guy, putting up with Yuuki's shenanigans without getting angry. I'd like to see what drives him.