The third movie is about Gotham rebuilding. After everything that happened in TDK, the people begin to believe in their city once more and in the end Batman retires... Then they could do The Dark Knight Returns based stuff with a different cast later on.
Batman retiring? Never going to happen. Is that really the movie you, or anyone else, wants to see??
I don't necessarily agree with that. I think he really wanted to kill Batman because Joker initially thought Batman would be in the way of his fun. I think he then realized Batman was the most fun he was having.
I think he was being truthful to an extent with Two-face in the hospital scene. "Do I look like a man with a plan?" Yes Joker is deviously smart, but I really think a lot of this was made up along the way, simply to amuse himself.
Couldn't disagree more. Believing anything The Joker says is a huge mistake. They never come out and directly say what the Joker's overall plan is, which is one of the reasons the script is so well written, it leaves up to the audience to piece together, or not, what really was going on, how the Joker was manipulating everyone in Gotham, the mob, the cops, the goons, Harvey, and Batman himself, to jump through the hoops he set up. Batman was never in Joker's way at any time. He was telling the mob what they needed and wanted to hear, just as he does with everyone.
The Joker very much is a man with a plan, despite what he says. Poor broken Harvey bought into his lies. The Joker told him what he wanted to hear. The Joker desires to corrupt, to prove his point that people are inherently selfish and will "eat each other", once the thin vinear of civilization is taken away, "all it takes is a little push" and he is that force to push them. He is proven wrong when neither Batman nor the people on the ferry are corrupted, but he proves his point when he very deliberately, within his overall plan, drives Harvey, "the best of us", to a life of madness and crime. Sure he didn't count on Harvey becoming Two Face, that was just a wonderful, random bonus for him, but he did count on Rachel's death testing the supposed uncorruptibility of both Batman and Harvey. And in the end, he wins to some extent. Harvey is lost and broken and Batman becomes the murderer, at least in the minds of the people, that he swore he would never become.