I have always mantained that the Joker should kill rachel off, not because I don't like the character of rachel or Katie Holmes for that matter, it is just that event would push Bruce closer to crossing a line that he has promised to not cross. The Joker drives him to want to kill the Joker and I would love that to be the end fight. He has flashes of rachel as he punishes the Joker and he then has flashes of her dead by the Jokers hands, sending him into a rage until Gordon comes and stops him, like in hush. Gordon lets off a round that zips by Batmans head and hits the brick wall right above his head. Batman pauses, he utters, "How many more lives, Jim." Gordon is taken back that Batman has called him by his first name. "How many more lives will he destroy if he isn't stopped right now!?". Batman turns to face Gordon still clenching the Jokers shirt in his hands. Gordon still has his gun raised, " It's over! We have him now. He will be punished for what he has done. Batman...if you kill him...if you cross that line, I will lead the hunt to bring you down. He has destroyed so many lives, I won't let him destroy yours." Batman looks at Gordon, rain water runs down his cowl. He closes his eyes and lets go of the Joker's shirt. The Joker falls to the ground, limp. Gordon rushes over to the Joker and puts handcuffs on him. He turns his head to see batman is gone. I wold love something like that