Re: IM3 a "continuation" of the previous movies good idea or horrible?
I honestly think it's a mistake. Iron Man 2 was 30% an Avengers trailer/prelude, and it's embarassing.
Yes, it's cool that Nick Fury is in Iron Man and Tony Stark appears in The Incredible Hulk and Hawkeye is in Thor. But when the cameos and the set-ups detract from the actual movie itself, the one you are watching, then it's counter-productive.
Why would I wish to see the Avengers when it'll be just a big trailer for Iron Man 3, Thor 2, etc? I'd rather watch The Dark Knight Rises. Or the new Spider-Man. Atleast then I'll be watching just the damn story I paid to see, and nothing else.
There is no Marvel/DC rivalry. Most of the great comic creators worked for both; Jack Kirby, Frank Miller, Grant Morrison, Walt Simonsen, Gil Kane, Steve Ditko, John Byrne, Steve Englehart, Mark Waid...even Stan Lee.