First, for everyone, I would make a distinction between the Cavill Superman and the Snyder Superman. Henry Cavill is a great fit for the role, and I see it in scenes (such as in Justice League). But Synder (or Goyer, or whoever wrote it) sabotaged some good stuff in it, or didn't build up for the payoff.
So Superman killing Zod -- there's nothing n the movie to show that Superman has a self imposed rule of not killing.
True. But so what? It's his FIRST DAY ON THE JOB. He's just figuring out the extent of what he's capable of, has taken in a massive amount of new information about his origins, has no one in whom to confide or consider the possibilities that he's known for more than six minutes...and he didn't kill Zod with a cathartic "hell, yeah" attitude so prevalent among "action-heroes" on screen. He's clearly upset and anguished about it and it is far more a sign of his total inexperience in the role--particularly facing multiple, equally-powered, better-trained in combat adversaries--rather than some sort of sign that this version of Superman is some "murder-happy sociopath" that some have (asininely and ridiculously) tried to paint him with.
Superman dying came off as too soon...no feel for him growing into this hero role that the world sees him as.
I can see how it could be viewed that way, but it does not reflect how I experienced the event. Hardly a universal reaction, at any rate.
Also, They had him wander around doing secret good deeds, and not actually grow into the Superman role, like Reeve's Superman did. (Captain AMerica was able to form his character and history as a hero in mere minutes)
I very much enjoyed the Captain America films (especially the first two). However, I did not admire them as much as I did Man of Steel because they followed a predictable, safe path--mirroring and replicating the source material rather than considering it from a different angle. They were well done, entertaining, enjoyable--but not challenging my expectations (something Cavill's Superman has done, though less so--and disappointingly--in Justice League). My favourite aspect of Man of Steel is precisely that he was shown as inexperienced and uncertain of himself--I have, literally, THOUSANDS (counting comics, on-screen and even a few novels) of examples of Superman as a self-assured, righteous hero. Plenty of room for an unorthodox take--particularly one that deliberately challenges expectations.
His first "appeearnce" to the world is fighting some aliens...which, COULD have been spun as Superman being some kind of fugitive, and that HE put the world in danger by coming here.
Kind of a big plot point of BvS. The two films together offer an intriguing (not flawless--but nothing is) look at how Superman would be perceived if A) he was real and B) his "first appearance" was today, rather than the more (superficially) innocent "days of yore" that inform the Reeve version. I love the Reeve Superman. But that version is safe, expected, and ultimately unsurprising. Cavill's Superman is one I find refreshing. Obviously, YMMV.
Good "modernizing" stuff like Martha helping Clark with his powers by using special needs children techniques was awesome, and SHOULD have been one source of hero inspiration ...so instead of Clark coming home to a bitter "get off my lawn" personality of a mom...she should have been finishing up with a special needs client with Clark looking on admirably.
Again, I disagree. My second favourite element of Man of Steel is the quite IMPERFECT Kents. Rather than the paragons of virtue found in EVERY. OTHER. VERSION. OF. THE. SUPERMAN. STORY., we get flawed human beings who do their best in a world far more (justifiably) paranoid of how the government would act if they knew of young Clark's existence, as well as the distrust and fear of much of the general public. When Martha tells Clark he doesn't owe anyone anything, she's placing his well-being above that of everyone else--a human parenting moment (rather than the idealized "noble purity" always placed on the Kents). And where some (mistakenly) view Jonathan's "I don't know, maybe" when Clark asks "should I have let them die" as a callous response, his hesitant tone clearly indicates the desperate realization of someone who doesn't have the answers, someone who is torn between his fierce impulse to protect his son from the world and all the dangers he imagines it holds and the "noble ideal". I found that a very refreshing take and far more interesting than another "wise old salt of the earth" pontificating.
There are pacing issues, plot points and other things I would have liked to have seen done differently--they're not perfect movies by any stretch. But, as far as I'm concerned, defying my expectations, even when it falls short in some places, is far more captivating to me than a safe serving of the same thing again. (I have similar thoughts about Kelvinverse Trek and feel equally strongly about Kirk's character arc, but that's for another thread).