I won't spoiler Imposter it for you if you havent read it yet but i am pretty sure the book focuses more about how much Batman is emotionally vulnerable. The story also discover his trauma towards his parents death. I don't thin any of the comics have done that rather more cold hearted emotionless character. I know people expect to read some mysterious myth villain group like what Morrison and Snyder did. Some people also expect Batman to be almost perfect because he prepares for 'everything'. Which Zack Snyder already kinda did against Superman.
But this comic looked into a whole new different direction of the character and honestly I really wouldnt mind that.