>>And it has occured to me that this series has become so bogged down with plot points that i don't see how anyone who isn't a real follower would really be able to appreciate it. <<
The Star Trek films are the same way to me....
>>I think you might find that if Luke didn't know Leia was his sister, he's not going to stop her from kissing him. Remember that at the times you have mentioned, Luke didn't have much of his jedi insights to be able to tell<<
But Lucas, as the writer, knew! Couldn't he have written this in some way that it was less gross and creepy? Like, avoided it all together... something!
Besides, "knowing" you are brother & sister doesn't mean anything..... Riff Raff and Magenta knew.... in Tromeo & Juliet, Juliet & Romeo found out they were brother & sister and said, "Sheeew, we've been through too much to quit now!" and stayed together. In the movies, anything can happen!
And I think it wasn't Jar Jar that caused all the trouble in the universe. Take a look a t the bad moves by Obi Wan & Yoda. They cannot see a Sith guy right in their midst even though he's a politician and can't be trusted. Then Yoda, who's Padewan turned to the dark side AND allowed a green and fresh Kenobi to train Aniken, he sends a horny, inexperienced prideful Ani on a delicate mission with a horny, prideful senator/queen. Brilliant!
Besides, that blue guy with horns in Palpatine's office, he suggested that someone call for a vote to give power to the senate leader. Jar Jar was simply tricked by Satan!