hmm, disagree with the idea that star wars was distinct from the other two films... keep in mind those two movies had different directors which would really change the feel of the films...
also, think about the name darth vader, almost german, and in german it would mean Dead Father.
then there's the fact that there's only three jedi shown in the first movie, ben, luke and vader and since ben makes it clear that he's not the father there is a link between luke and vader... and there's vader sensing something different about luke during the death star sequence.
and the whole vader replaced/killed your dad thing... if you take it literally than yeah, it's a big fat lie. But if you look at it from the perspective of the jedi and the philospohy of lucas that the decisions you make turn you into the person you become, than anakin did die and it was vader who killed him... vader killed the good and the potential in anakin.
the princess thing, well, sometimes the easiest way to hide something is in plain sight.. besides, it's obvious that vader didn't even know he had a daughter so there would be no reason to hide leia like they hid luke.
and yup, it is lucas' baby and yes, he is killing it. hahah