I want this movie to suceed, just because it has been so long since we've seen a Superman movie, and if it fails, I'm afraid it will be another long wait until they try again. But the time frame does have me worried that it will be a bomb, or at least confusing to the average moviegoer. Most won't really remember the previous series, or for the younger "smallville" crowd, may never have seen it.
The only good thing I can think of out of this is it does solve a problem of superhero/comic book movies have, and that is over half the film is dedicated to creating the hero/backstory stuff, and therefore leaves little time for the actual movie.