Low 3 for me, almost a 2.
I liked the parts that dealt with what's going on in Gotham City. In the main "Evolution" story line it's more in the background, but the issue/chapter "Happy Birthday Two You..." and the 2-issue "Urban Renewal" are both grounded stories that take place entirely in Gotham. The latter explores the tensions between the people who remained in Gotham during the No Man's Land time, and those who left and came back.
I did not like the story with Ra's al Ghul and his henchperson Whisper. Their dialog is super corny and I just wasn't very engaged. Plus the art is quite bad. Although it looks good as you flip quickly through, once you start reading you see the execution is rough. Yes, there are a few very good panels, and some good portions of panels, but the layouts are awful and there are so many bad drawings.
Such as:
* Many bad drawings of liquid, and of people drinking liquid. (yes, this is a pet peeve of mine)
* On page 50 a character is drawn on his stomach in a hogtied position but there's no rope securing his legs. His legs are bent and his feet are in the air for no apparent reason!
* Lots of anatomy problems. And hands :(
* A girl presses her face against glass and her forehead, nose, chin, and both cheeks all touch the glass AT THE SAME TIME!
However, the art got noticeably better in chapter 3, the layouts in particular. They added a second penciler named John Watkiss. I wonder how he and the original (solo) penciler from the first two chapters Sean Martinbrough shared the work? And I quite liked the art by penciler Phil Hester in the "Urban Renewal" issues.