Some comments about that subject from /Film.com:
"all the Marvel movies are just a teas for The Avengers."
"The Avengers better be ****ing worth it."
"I fear that even The Avengers could turned out to be just a teaser for The Avengers 2.
That's how Marvel works. No movie is really a stand alone, they are all just a teas for what comes next.
In other words, the continuity is ruining everything!
So far Iron Man 1 was the only stand alone film by Marvel Studios."
"I am so sick of Marvel movies. They're all so boring and generic and safe and AWFUL! ARGH! I'm ready for the superhero genre to die already.
They aren't even stories. They're set-ups. We know none of the characters are in any danger because a) the movies are designed for kids and b) the characters will need to return for the 17 sequels and 23 spin-offs. The Marvel franchise is the franchise-iest franchise around, and that bothers me. They're products, not movies, not stories."
"There's an even bigger problem. Not only that Marvel won't let their heroes die, but also their archenemies.
So you can be sure that Loki, Red Skull, Mandarin or any other archvillain is safe from real death which could be frustrating. What Marvel refuse to realize is that movies and comics are just completely different mediums. They aren't the same and SHOULDN'T be the same."
http://www.slashfilm.com/marvels-latest-rumor/
"i predict something average! like every movie marvel puts out of their factory."
"First one was mediocre AT BEST.
It had the same problem that most of the Marvel Studios films have.
It felt like nothing more than a set-up for The Avengers..."
"I see some people saying that Marvel Studios are like the Pixar of comic book films and It boggles me.
How the **** is Marvel Studios even remotely close to the level of Pixar?
I mean, let's have a look at the quality of their films so far:
Iron Man - Great.
The Incredible Hulk - Was okay.
Iron Man 2 - BAD!
Thor - Mediocre.
Captain America - Was okay.
Yup, with that amazing record and consistent quality in their films there's really no doubt they're the next Pixar. Cuz most of the Pixar films are average at best, right? :/"
http://www.slashfilm.com/hired-direct-thor-2/
Kind of true, I have to say.