Anyone that complains about the plot contrivances in Star Trek must admit to more egregious contrivances in this film. Lois Lane actually had me throwing my hands up more than once near the end of this picture.
I like Cavill as Supes. I REALLY liked the Krypton stuff, especially Crowe. I liked that they didn't try to fall over themselves explaining alien tech. It is alien tech. That is enough. I loved the fatherhood stuff with both of Superman's fathers (great for father's day weekend). Liked Costner a lot. I liked Faora, and the way they showed her fighting. Zod was pretty good.
I have a huge problem with the way they handled Kryptonian superpowers. The powers come from the radiation of the sun. Jor-El explicitly stated this. I can also buy the effects of the Kryptonian atmosphere vs. Earth's, but they just kept playing fast and loose with what affects powers, what doesn't etc.
Why were they so afraid of saying "Smallville" "Metropolis" or worst of all, "Superman" (they didn't even call the picture Superman for crissakes)? This isn't Batman. A dollup of cheese is acceptable with Superman. I wouldn't be surprised if there was discussion about never showing Supes in his costume in this film at some point in development.
As others have said, the fighting was too much. Too long, too fake. We've seen mass destruction done over and over, so it wasn't special. Also, I feel like Supes would draw them away to avoid casualties. The way buildings were falling was just... over the top and not in a good way.
Finally, I hated the way they ended the conflict between Zod and Supes. Superman would not have killed Zod. Jor-El would not approve. Jonathan would not approve. Plus, how could he have done it since Zod is just as invulnerable as Superman is? Just didn't make logical sense and it did not at all ring true with the nature of the character.
I think that if (when) they make a sequel, that they have the right cast, and Clark is in place where he should be at the Planet, so there is potential. I just hope they come up with a creative way to put Superman in peril which is the core challenge with any Superman story.
Overall, I merely liked this film. I'd give it a 6.6 or 7 of 10.