I've personally enjoyed Johns' run on Justice League but if you didn't like the first arc you may want to cherry pick it such as Throne of Atlantis and the Shazam Justice League backup (which is its own trade) as well as Forever Evil.
Batman Eternal was great. It's long, 52 issues and I think the first trade which collects the first 20 or so is the only one out, though the second is releasing early July I believe. It's an extended tour de force with alot of the extended Bat Family and rogues gallery, though some issues here and there were a bit weak, the general run was extremely solid and worth the time.
Grayson has been fantastic so I highly recommend that. Batgirl is fine, I have issues with the change, but its still a good book.
If you haven't read Lemire's run of Green Arrow give that a try. It's Volumes 4, 5 and 6 of the New 52 run.