I am mostly a lurker on this side of the board (though admitedly I have posted sparingly as of late), but I will jump in for a minute to provide my two cents.
I am a DC fanboy. I like Marvel, I have a fun time at their movies, but the DC characters resonate better with me: I grew up on BTAS and STAS, I read DC regularly, and I have binged Young Justice more than once to try and make season 3 happen. I am the kind of guy who would be guaranteed audience for this movie. But I won't be seeing it in theaters. You see, I really, really dislike Zack Snyder's work: I don't care for 300, I suffered through Sucker Punch, and I don't even mildly enjoy Man of Steel. I think Snyder thinks and directs like an adolescent who likes to flaunt macho attitude, fantasize about scandidly clad women, and repeat unecessary "cool, bruh" moments. It's like hearing that guy who never grew out of the frat-boy phase in college, and it's tiring. So I will for once follow through with my online promises, vote with my wallet, and not go see this.
I don't mean to say that just because Snyder failed at his "darker" attempt at superhero movies the genre cannot be serious. There is a place out there for superhero movies - even ones featuring Superman - that touch on complex issues, and it isn't even hard to brainstorm a story around it: make it a dilemma, pitting a Superman who stands on absolute morals (there are lines we should never cross) against an utilitarian Lex Luthor (it is worth killing X number of people if the total welfare for humanity is positive). Or perhaps use Clark, Lois and Jimmy's profession to follow through an investigative journalism story parallel to the action. They discover an elaborate scheme following the deployment of Vlatavan troops on Bialya, leading to the appointment of UN Secretary-General Lex Luthor. Perhaps it involves Daily Planet CEO Morgan Edge pushing for the news to be presented in a certain way. There are plenty of great stories to be told with Clark Kent/Superman, you just have to be a tiny bit creative and hire the right people for the job.
And of course, the core of the characters need to be gotten right: Superman should always be a symbol of hope and justice, in whatever way he is featured. It's his entire purpose. For all the Christian symbolism on Man of Steel - and unlike others, I am not bothered by the messianic parallels -, Snyder forgot to show the most important of them: that both Kal-El and Christ (regardless if we believe his holy status or not) inspire countless others. Superman is meant to stand for something, and to have a positive effect on those around him. Flying really quick and looking cool with the cape are just visual flair.