To continue making my way through...
I didn't understand anything that was going on in Blackhawks or New Guardians. I don't mean that in a "they started the action without me and expect me to keep up" kind of way, which would be good. I mean that in an "are we sure those aren't just random panels?" kind of way. New Guardians is made worse by basically trying to "clean up" old continuity with the relaunch instead of just leaving well enough alone.
Savage Hawkman suffers from continuity-itis already (did New Carter Hall really need an existing history as Hawkman?) and the new design is dreadful, but it has definite potential.
Firestorm was a disappointment, a mess of violence, teen angst, randomly-placed quips, pseudoscience, crapshoot continuity (again, in the first issue, is it really necessary to do this?), and a storyline that makes the hero...basically inconsequential. Maybe I just don't like Gail Simone's writing.
Superman...The story was pretty marginal, the new costume stinks, there's too much "tell" rather than "show," Clark comes off as a bit of a jerk (especially the epilogue), and the "article" narrating the story really should have been edited by someone who had, y'know, read a newspaper at least once. Those are cosmetic details, though. What's important is that it's (almost) the same fun Superman from Action Comics, the characters are basically interesting, and most of all, this is how you do a relaunch, diving into coherent action and introducing everybody as you go. Basically, DC should've led with Superman instead of Justice League and told the other writers to keep trying until their books were better than this.
Aquaman was the other winner by a long shot, though the art is absurdly goofy-looking and I think it was...well, "methinks the lady doth protest too much." I get the idea and enjoy it as sort of a background concept, but the entire issue was basically, "no, really, Aquaman can be cool. No, really!"