[RagnarokAngel]

I have to object to #1. I don't know if you'll see it but the "Rule of Two" was not a lucas creation and in fact is part of the expanded universe (novels etc.). It was created thousands of years before because the Sith aren't quite as agreeable as the Jedi, so there would be a constant power struggle as to who "led" them. As a result Darth Bane put forth the rule of two, that there'd only be a Master and Apprentice. They could have thousands of lackeys who were Force users (and in fact they often did) but they were not true Sith Lords.