When I say "safe", let's use Thor as the example, I mean that I feel the film didn't really do everything it could to fully immerse us in Thor's world through the storytelling. The plot was very predictable and straightforward. You didn't really have to guess what was going to happen throughout the course of the film.
I felt like they should have showed us a lot more of Asgard than they did. It was there, but it didn't really feel "lived in." We only got to see a few segments with the main characters, but nothing really with the rest of the Asgardians. I felt like it was a waste of a great location.
The best thing that happened story-wise was Thor destroying the bifrost and cutting off his connection to Earth. It was still predictable, but at least we're left wondering how he's gonna make it back down to Midgard.
Blackman:
I agree, and I'm glad he was generally well received by the casual movie-goer. I just feel like there was a lot more there that we didn't get to see which was blanketed by a very casual, predictable story. I liked it but I didn't love it.
All in all, Thor performed well, but it definitely left me wanting.
CHEWY:
I don't know about that. The cast alone was enough to sell Iron Man. I'll agree that it's a risk to introduce a hero who isn't Superman/Batman/Spider-Man to the general public, but Iron Man, in true Iron Man fashion, knew it was awesome and knew it could appeal to a huge demographic. If people like my parents, who hate comics, love Iron Man, then that tells me something about what kind of character he is.
Sorry, that's an assumption. I'm usually the first to speak out against folks who call something "too dark" or "not dark enough." I hate the word even. I didn't expect Thor or Cap to have that tone at all. I didn't want them to because that's not who they are. Their stories simply didn't do anything that great and instead took a more safe and casual route. Iron Man took the time to properly characterize its cast of characters and side plots and succeeded all the more for it. Cap and Thor did well enough for their main characters, but kind of left everyone else on the sidelines. That's really all there is to it.