Look, if you're going to do silver age stuff...DO silver age stuff. All Star Superman is the biggest, best silver age throwback I've ever read, cause it comes right out there and says "look at me! I'm a silver age book!" without trying to hide behind the current Batman idea of "I'm a dark, serious modern book, but I'm taking some silver age ideas and redoing them in a dark, serious, modern way." Batmite will never...EEEEEVER...fit into a serious, dark, modern book. It doesnt work. Same for the league of Batmen. Same for even Damien. It just doesnt work, especially when in actual continuity.
I think Morrison did some good things with it near the beginning of his run. That prose Joker issue was amazing, and the best Joker story since Man Who Laughs. But everything after that was just so bad, and, yes, amateurish, that I couldnt keep buying the book. It literally made me sick. It's the anti-Paul Dini Detective Comics.