In regards to the movie overload thing, it's no different really than how it's been for years.
2003- Daredevil, X-Men 2, Hulk
2004- Punisher, Spider-Man 2
2005- Elektra, Fantastic Four
2006- X-Men 3
2007- Ghost Rider, Spider-Man 3, Fantastic Four 2
It just happens now that, they're set in the same universe. Which is frankly what I always wanted from those films (and why I wish most of the above would revert back to Marvel too)
But it's not like you HAVE to have seen say Iron Man 2 to be able to go see Captain America 2, or have seen Incredible Hulk to go watch Thor 2 etc