Don't get me wrong, I want nothing more than for Katy to change up her image and sound next era
But we all know that if Katy served another Teenage Dream 3.0 with a Roar 2.0 lead single, she'd still smash. The whole "she NEEDS to change her sound" thing is b/s
She can, and she probably will, but she doesn't have to. Sometimes, changing a sound is more detrimental than advantageous. She needs to not change it too much, if she's going to change it at all.