What I was essentially saying is the hulk is not a complex enough character (in the comic) to really hold a whole movie together himself. It is why, historically, the Hulk as a crossover or cameo in other titles sold MUCH better than his own story.
However, the old series was a GREAT series. But it wasn't the Hulk from the comic. It showed the Tragedy of a man unable to escape the past, and yet who was a sort of Angel of Circumstance often Hulking out just when the bad guys needed to get whooped.
That was PERFECT for TV, but would never fly in a movie.
But if Ed Norton is playing David Bruce Banner, they are guaranteed success before they begin. He is visually interesting to males and females (not for the same reason, but girls like to look at him, while guys see the CRAZY in that dude immediately), and a GREAT actor.
Regarding Mary Jane,.. Evan Rachel Wood is said to be casted for the musical Spider-Man.
http://www.evanrachelwood.net/
But Betsy Ross was a bit character,.. never of any consequence except as a string to pull the Hulk by. She was constantly being recycled in the comic, and everytime it was explained away as a hallucination or a vile scheme to make him think she was still alive. The Ultimate Betsy is cold and doesn't even like Banner until he kills hundreds of people as the hulk when he is looking for her.
Connely made the best attempt at the role, in any medium.
But I rather think of Betsy as a psychological indicator of Bruce's. He "invented" her as he sees her as a tether to humanity, and clings to her, and has built her up so larger than life that she is more his imaginary PERFECT girlfriend because he needs her to be, instead of the selfish and opportunistic women she really is. He invents the tragedy of her because it humanizes himself when he needs it most.