Anyone notice the significance of the Titan Zombies left alive? 1) Terra - who we know will be showing up in Outsiders to mess with Geo-Force's mind (we know the writers wouldn't miss a chance to do that - particularly Tomasi who is so deep in this event)
2) Tempest - who I, like many others, expect at least to get resurrected. And who will probably show up again in Blackest Night proper. Honestly once Damage was killed by Jean in BN#4 that should have sealed the deal. Johns likes Grant too much (he's the one who put him on JSA) and they've developed him too much for that.
3) Hank Hall - Dove I/Don appears to Dove II/Dawn in this issue and tells her that she can save Hank. This after she's dusted (literally) who her Zombified sister - which sets the stage for Hank's return as Hawk (though I don't know how they''ll get past him killing the GA JSA as Extant in Zero Hour).