You bring up some damn good points Johannus. There's definitely some potential in that concept of starting out In Medias Res, especially if your own particular interpretation of the prequels is benefited best by that kind of opening.
I think for my draft (at least at the moment) the Anakin's arc benefits seeing exactly what he gave up to go with Kenobi, and even how a place like Tatooine was had potential before the war destroyed much of hope and possible prosperity. I want to be able to return to there in the third prequel and have it illustrated exactly how damaging this conflict has been, even to planets not directly involved in the war.