@Zeeguy91: You're missing the point. Jean Grey was killed off for years. The Phoenix has had different hosts. Galactus is supposed to be one of the most powerful entities in the Marvel Universe. His appearances are rare. I don't see the relevance in comparing the likes of Galactus, Thanos, Doomsday and Darkseid to active members of the JLA, who appear on a monthly basis.
Hawkeye and Black Widow only had more active roles because the actors are more established than Hemsworth. They're bush league characters and are totally out of place in the Avengers line-up (but that's another story), don't expect to see a Hawkeye or Black Widow movie.
Fair enough on Action Comics but Superman should be in the top 10. He's one of the most iconic superheroes of all time and the first two Superman movies are all time classics and a new generation see him in Smallville. That Superman isn't in the top 10 suggest DC are doing something badly wrong.