I prefer the earlier Monster Men by Matt Wagner. Maybe it's not fair to openly compare the two, but they kind of brought it on themselves with the title and the subject matter. 
 It's nice seeing all the characters team up (minus Batgirl and Robin for some reason), particularly Dick Grayson who gets some appropriately awesome moments. I actually like the idea of Clayface as a hero, but I hate that inevitably he'll end up back as a villain to keep the status quo in check, much like Two-Face and Riddler before him. 
 I like seeing the different leadership styles employed by Batman and Batwoman, and why she could be seen as a better leader than Batman under the right conditions. 
 I still hate Duke Thomas and wish he'd just go away, although Batman gets points for seemingly feeling the same way at different times during the story. 
 Overall, I don't think this story warranted a big crossover and it's not necessary to smash one out so early in the Rebirth. 
 It wasn't terrible but in retrospect I should have waited for the paperback.