I mean the themes in it have been explored since at least the 80s(in no man's land etc) but probably not as succinctly and all together in one place, so CoO is probably a good place to start
Since I'm twisted I'm been prefering joker puzzlebox so far, but that's just me not an objective ranking of interestingness, and Batman: Reptilian was good imo it has
spoiler
Killer croc going through a gender identity crisis
And also frank portrayals and explorations of the effect Batman's violence actually has, it written by Ennis so if you're a fan of his more superhero stuff(the boys) you'll really enjoy it
I mean the themes in it have been explored since at least the 80s(in no man's land etc) but probably not as succinctly and all together in one place, so CoO is probably a good place to start
Since I'm twisted I'm been prefering joker puzzlebox so far, but that's just me not an objective ranking of interestingness, and Batman: Reptilian was good imo it has
spoiler
Killer croc going through a gender identity crisis
And also frank portrayals and explorations of the effect Batman's violence actually has, it written by Ennis so if you're a fan of his more superhero stuff(the boys) you'll really enjoy it