Old Republic scientist had invented cloining technology hundreds of years before the stories we (unfortunately) see on movie screens today. However, some of the test clones were unstable and prone to strange mutations, so the senate quickly banned the technology across the galaxy. About 50 years later, The Old Republic started receiving reports of strange, armor-clad warriors attacking some of the outer-rim worlds. When they send a team to investigate, they are quickly overwhelmed by hundreds of MANDALORIAN WARRIORS (yes, the same place where Boba gets his armor). The Republic immediately retaliates by sending it's entire fleet against the invaders and soon discovers that the dreaded Mandalorians have uncovered the secrets to the Republic's old cloning technologies and have been mass-producing their soldiers (so the clones are the BAD GUYS in the original tale) After decades of fighting, the Jedi and the Republic defeat the Mandalorians, but at heavy losses. Where once there were thousands of Jedi roaming the galaxy, now less than 100 remain. With the severe destruction caused to so many worlds during the Clone Wars, trust in the Old Republic's governing body and its Jedi defenders is at an all time low. This gives a young senator named Palpatine his chance to turn the people against the Jedi and the politicians against each other. With so few Jedi remaining, it is easy for his new apprentice, Darth Vader. to hunt down and destroy the rest of the Jedi.
That's just a quick version
That is what the PT was originally. Has anyone ever played through Knights of the Old Republic I + II (and soon to be three)? With a bit of modification, that is what formed the story for those games. Did anyone who played the games extremely dislike the story? Hell No! Have the games been extremely successful and thought of as being on the higher end of Star Wars videogames? Hell Yes!
I always hear about people doing rewrites, bitching, talking about redoing the films, etc. Well there it is the original idea. Not only is it gold, but seeing as how people generally like the games, proven to have worked.
I'm serious take a look at this, sit back and think it over.