_Bail should be Obi-Wans's friend as Owen should be Anakin's friend
_Jedi Knights shouldnt be an official republic order, with a high council and all that. The Jedi should be like "superheroes". Not everyone believes they exist, they fight for good and freedom but not just as superwarriors, more like leaders and advisors. (Kinda like Gandalf mixed with freemasonry).
_Obi-Wan and Anakin should meet when they are both grown ups. And should be Obi-Wan the one who has hopes for Anakin (not some QuiGon)
_Maybe, the Jedi Knight ObiWan Kenobi who is fighting in the clone wars (like many other jedi did by their own choise) with his friend the Prince Bail Organa, one day finds a young pilot in wich he sees potential for been a great jedi. This young man is Anakin Skywalker, who has a farmer friend called Owen Lars.
_I dont know what part should Palpatine have in the whole war. Maybe he is simply the bad guy (without disguises) that wins the war, just because in some crucial moment Anakin turns to the dark side. So we can keep with the idea of Good vs Evil