I was flip flopping back in forth in the months leading up to this event. The more I heard about it, the less I was intrigued by it. ("Zombies in space? Can't it be more than just that?") but this issue was really fucking good
It starts off like a horror movie. Nice quiet beginning, with the heroes (and some villains)all mourning the ones they have lost. It doesn't last long as the shit hits the fan. It's set-up, but it's damn good set-up.
Johns works some nice continuity nods in with Hal talking to Barry, and his referencing Tomasi's first arc on Nightwing. Plus, he totally kills two characters I don't like, so thats awesome.
Reis art gets better every time I see him. I love how he draws the GL constructs, and the effects of The Flash. His Black Lanterns are really creepy, and the deaths are brutal, just the way I prefer it.
With this first issue, things are looking good. I hope Johns avoids some crossover traps, like letting the story play out too much in other books. I also hope he doesn't somehow bring back to life everyone who has died permanetly, ad less zombiefied. Some can come back, but to bring them all back, seems like a waste to me, but thats just minor personal fanboy preferences.
It also totally helps I was wearing my Black Lantern ring as I typed this.