It was alright, nothing very new or that different as of yet. And I did think it was Johns playing favourites with Green Lantern again. Liked the reveal of Superman. I am not fully engaged yet but will keep reading. Hopefully the reason they all join together is convincing and has some depth.
It's interesting that none of the books I've read so far (JL, Detective, GA, Action) include any sort of origin. They begin assuming you know all that already.