It doesn't support the kind of heroes we read about in novels, though. They help each other, but can fight just as well alone. A D&D party is not a military unit, until now. Conan, Pug, and other lone wolves wouldn't feel comfortable in 4E.I overwhelmingly enjoy the approach 4e took with this much more.
D&D isn't a "go team!", "and I'll form the head!" type game, because it's against type - fantasy heroes aren't about that for the most part. I'm suprised some people seem to think it is. It's just another gamist alienation of D&D away from the genre it supposedly is supposed to convey.