Avengers Movie 2012

I've seen the Avengers Movie Trailer and I am excited. Target release date is on May 4, 2012. From the looks of it, the following are the heroes that will appear in the movie.

• Iron Man (Robert Downey Jr.)
• Black Widow (Scarlet Johanssen)
• Thor (same guy who played Thor)
• Captain America (same guy who played Captain America, and also the Human Torch)
• Hawk-eye (same guy who played Hawk-eye in Thor)
• Hulk (some new guy, no longer Edward Norton)
• Nick Fury (still played by Samuel Jackson)

It also looks like the main villain in the film will be Loki (played by the same actor in Thor.

Now for some interesting questions.

If Thor was able to beat Loki in the movie Thor, why is there a need to assemble a team of Avengers? (emphasis and drama while stating "assemble a team of Avengers", and yeah, I know, the battle cry is Avengers assemble.)

If there was an Avengers Fantastic Four cross-over movie, would the human torch / captain america be paid double?

Why was Norton replaced for the role of the Hulk? And why can't a single guy stay in that role for a long time? (Bana, Norton, new guy)

With all the money being paid to the big-named stars, what budget will be left for good writing and effects?

Perhaps the trailer below will convince you.