Our friend George is rather terrible at Lore Keeping, take the Clone War for example, and him just taking a crap on all of Traviss' work. In my opinion, she did a much better job at adhering to lore than the Clone Wars do. Lucas doesn't seem to realize that for many people, inconsistencies matter to us. He sees Star Wars as more of an investment and Hobby that he can do anything to, because he created the spark for its creation. Don't get me wrong, I love his work, but sometimes he upsets me. As for balance, I believe that the force is present in all beings, and beings are inheirently evil, or good. There are good people, and bad people. The Jedi destroying this Sith in my opinion, would be close to bringing the force into this Taoistic form, as even with the Sith gone, there are still evil people. So now we have a ton of lesser evils combating a smaller group of extremely goodies. Make sense?