What if the Joker was the Hero?

Lately, we've seen a handful of contrarian takes on classic movies, characters, etc. They never cease to entertain. The latest one I saw re-envisions the role of the Joker...

They say if you don't love Batman as a kid, you've got no heart. But if you don't love the Joker as an adult, you've got no brain.

What if the Joker was actually...the Hero?