Would Zero have been a bigger hit if it was still Katrina Mere Jaan?

Zero was originally titled Katrina Mere Jaan and focused on her before SRK became a part of the movie. Katrina would have played herself rather than a satirical take on an actress. Would the film have been a success had it not been revamped?

https://www.ndtv.com/entertainment/katrina-meri-jaan-to-zero-how-shah-rukh-khans-film-got-its-title-1796593

Easily

Waise bhi film mein Katrina k siwa aur kuch bhi accha nahi tha

Nope

It was an objectively bad movie with unlikable characters 

Katrina is the only actress who had a film created about her, unless you count Sridevi since Mast starring Urmila was based on Sridevi.