It would have been a much more interesting movie if Lucas had incorperated that into the the prequels more. That the reason Anakin was the instrument to salvation to the force would have been not because he was tricked by Palpatine, but because the Jedi Order had become stagnant and corrupt without intentional malice. It was a more subtle kind of evil, where they start from a good perspective "Don't let attachments control you" and have moved to the other extreme wherein the order dehumanized it's Jedi by forbidding basic social functions. Anakin being seduced by the dark side could have been him being driven insane by his desire to have simple normal relations. As a result, his fall to the dark side wouldn't have been his inability to save his wife from death by childbirth (a very silly concern in the technological wonderland that SW exists in) but his being cast as a social pariah by the Jedi order for having the audacity to have a normal human relationship.
There are some hinks with the idea that would ahve to be worked out, like the fact that this cast Yoda and Obiwan in a bad light, but honestly, there is no need to idolize Yoda to being the master of all things good. Even he could be blind to problems inherent in a system that he is a part of for so long. Still, I like it as an idea, because it places Vader in the both sympathetic and damning position of being both the hero and the villain. There's no way anyone wouldn't sympathize with a person fights back against the system for basic human relations, but also no way that anyone could fully support destruction of so many people.