Call Him Doom. Why? Just do it, OK?

Fantastic 4 has such a generic superhero script, the writers forget to come up with an evil world take-over plan for Dr Doom. His plan is to kill the 4, and we're to assume that from there the road to great power pretty much goes without saying. There is no specific threat to the world, or even to the city of, um, where are they again? The whole movie feels like it should be the opening 1/2 hour to an actual movie--heroes and villain are established, villain is temporarily foiled. In a better movie the villain would escape, devise a masterplan and come to the edge of realizing his goals before being dramatically thwarted. In this movie the creators are content to take 100+ minutes to introduce five not-so-complex characters. Maybe they're saving the plot for the sequel.