This video is pretty cool. It's a hypothetical look at how Lucas might have created Episode 1 if it came out in 1987, 10 years previous to when it really came out.
The commentator mines Lucas notes and takes into account what he was going through in 1987, along with current events at that time.
The overall broad strokes are the same - invaded planet appeals to Jedi to assist repelling the invasion. Along the way there is a stop on Tattoine before the Queen is able to plead her case to the senate. There is a final climactic space battle that results in defeating the invaders.
However, the details get quite a bit different