If she was desperate and just trying to get a hit single, why wasn't it a single before Lookin' Ass, Pills N Potions, Bang Bang, Anaconda, Only or Bed Of Lies?
But all those singles were attempts at getting a hit.
This is so messy. If Katy fit in the song, why not invite her? They did live performances together before, so it was about time they collabed. It's gonna help both for sure.