the sense that anakin, like vader, is this genius manipulator is certainly lost in the PT. its sort of picked up more in the clone wars series.
your suggestion bingo is really dark, and i sort of like it more, that perhaps an inherently more sinister character, is later offered the choices of good and bad from an ambiguous beginning.
would this more manipulative anakin need to be featured at the beginning of the film? his plight and squalor could contrast against the privileged and civilised naboo, which is later brought to a similar state of despair?
- what if perhaps, anakin is a complete alternative to luke, in that he desperately wants to change things, and isn't afraid at all. an opening with anakin could be all about "i really want to change things" but its beyond his power. when he leaves with quigon his mother could tell him that now he has a chance to make a difference in the universe. ultimately he would.