Oh good.... MORE Superman = Jesus symbolism.
I think a huge part of why people "hate" Superman isn't a flaw in the character it's a flaw in how he's portrayed.
This is part of that flaw, in my not so humble opinion.
I saw the trailer again today...and the overal feeling I get is the 'otherness' that Superman might feel. Sure there is that whole 'men will aspire to...' thread, but there is a really nice aw shucks reluctance that they are playing up and I think that's where the key is. I know you think the Flash is a tough character to translate, but Superman is, imo, even trickier. SOOOOOOOO colored by Donner's perfect storm that really captured the cartoonier aspects of Big Blue and, nevermind the comics, a movie faces a HUGE uphill battle to rise above that. Go too dark...fail, try to match that tone...fail. And the seat is hotter because of the EPIC failure of Singer's attempt to straddle the fence. This version fails and it derails the entire DC movie universe.
I don't know what the problem was with the last iteration of Supes actually. I liked it but I am thinking I will like this one more. They have the right stars as the back-up actors/actresses and they are stepping out on the ledge of him being an alien sent to both escape to and be Earth's hero. Should be interesting how this all plays out. I will say this much - they listened to the fans and critics of the previous trailers and provided some "heroic" stuff in the last trailer. Like I said before I never really read his comics but I always thought Superman was the "best of the best" as a super hero and he should be treated as such cinematically. It is probably also the reason I was never a big fan of the comic either - I like my hero's flawed in some way ala Spidey and Conan.
I am hopefully optimistic on this movie though.