What if Batman cured the Joker? It may be sacrilege, but I decided to explore an idea of Batman actually succeeding to do the impossible and rehabilitate the Joker with his extreme ailments. It feels very out of character of the dark relationship to actually have a happy ending, but I wanted to think outside of the box even if it feels like sugary/bubbly happy ending that would make little sense.
Why not? It might make a good story.
It'd make for a good ending (and draws plenty of what ifs) but I dunno that it'd work. Still.
This would make for a great Elseworlds story....