Sometimes I wonder, what if Michelangelo had deadline.

Maybe he would have finished more of his works.

It's very likely that he had deadlines.

He often worked on commission basis, and for example The David was basically him finishing the work of a bunch of lazy bastards who couldn't get their chisels moving fast enough through the giant block of marble.

I also think there were deadlines involved when he turned into a crimefighting turtle, I mean catching mobsters isn't done at one's own leisure.