Putting Joker as the main character, deleting Batsy, throwing him to the acid pool was something off to a good start
Imagine that baby would become the next Joker and not someone else. Cool start
Description: The dastardly Joker faces up against his greatest enemy in a new way! He now has to take care of him as a baby? After Batman fell into a chemical vat turning him into a baby, Joker must now raise him to be Batman, what will happen next?!?
This is actually a really fun idea. The Joker has always loved Batman in a strange way, seeing him take care of and raising Batbaby can get very interesting.