Thanks for the heads-up on the poster! Very cool.

As I understand things, it was the subject matter of the script that kept the movie from going ahead for so long. George Lucas came up with the contentious idea while shooting the Young Indiana Jones Chronicles, but neither Harrison Ford nor Steven Spielberg were too keen on the change in approach. Usually I avoid spoilers, but I'm glad I found out about this one -- if it had been dropped on me in the theatre, I probably would have been too wrong-footed to really get into the movie.