I think this movie would have worked better in two parts. It really needed an extra 10-15 minutes of buildup for Clark, not Kal-El, and his morals. I'd have loved to have seen an additional 10-15 minutes of acclimatization to the role, or even some buildup scenes for the news reporters to talk about BEFORE Zod shows up.
Having said that, I think the next movie will be more of a return to form that we expect, and am excited to see it. Heck, I can even see Supes' views on killing being affected BECAUSE he killed Zod.
PTSD might be a bit much for the Man of Steel, but I can see him being sensitive to the fears of the people he sees and hears around him (more so b/c he works at a news agency).
Also, while Lois didn't have a lot of ROMANTIC chemistry with Superman, I LOVED her character. True, Lois is sort of crowbarred into the story, sure any romance makes no sense (barring the whole "beefcake saved my life" syndrome).
However, I LIKED her, she wasn't the self-centered annoyance that they constantly turned her into in order to keep her from hooking up with Clark.
As bad as GL was, I am hoping they just mull that over and include him in the JLA movie anyway, even if they have to use a different actor. Hell, they could even make the JLA movie deal with Sinestro and the Yellow Lanterns, it could work. I can already think of a hamfisted way to incorporate the Martians into the equation, seeing as how Hollywood loves to connect EVERYTHING.