Here's my official prediction: this movie will disappoint.
Here's why I think it's going to be problematic:
1. The source material is overrated, IMO. It's "important" in the history of comic books, for certain. It represents the turning point from bright colors and rosey outlook on and by the heroes. But it's not as good as everyone makes it out to be, it's a little conveluted and sometimes confusing. And that's coming from me, a fanboy...I don't think the general public will like it much at all.
2. It should be a 4 hour movie. There's so much in the story that I can't imagine what they've had to cut and/or condense to make it a one movie theatrical release. I think it will suffer from that.
3. None of these characters are iconic in our culture like Spider-Man, Batman or Superman are. I don't think the public is going to connect with them like they do with those other films.
JMHO
That said, I'll go see it on Friday.