yeah the Sensor Girl swerve was a great one everyone "knew" it was Supergirl when it wasn't. It reminds me of when everyone "knew" Reflecto was Jo (Ultra Boy) but it was really Clark. When done right the swerve is a trope worth redoing. I remember the last time they got me was Young Avengers, you thought you knew who the characters were legacies of but oh no you were wrong.