I found the big finale pretty disappointing. After all this hype about this being the definitive Joker story, I was expecting something to actually HAPPEN. I think the only thing that actually occurred was the Bat Family is now distrustful of Bruce, but that happens ALL the time.
I never thought they would actually kill Alfred, but I was expecting some permenant damage to him. I thought he'd be blinded, because in one issue Joker says he's pouring acid in his eyes. Or that he'd be crippled and in a wheelchair. Or at least a cane. I thought the mystery dinner dish was going to be Alfred's eyeballs.
And I never thought for a second that he ripped the faces off ALL of the Bat Family, not for one second.
So if I understand the final scene properly, Joker *DOES* know that Batman is Bruce Wayne, but he'll never ever reveal it to anyone or use it? I find that a little convenient. Wouldn't he think it'd be hilarious to reveal his identity to the world and make him a fugitive?