Ahhhhhhhhh! *C3Px's head explodes*
Reading this whole thing is really annoying. PT information from the OT was pretty scarce. There were only a few plot points scattered throughout the trilogy that had to be taken into consideration while writing the PT, yet most of them were not. Now we seem to rely entirely on the EU and fanboyisms to explain these things. Does that seem right to you?
All Georgie had to do was watch his trilogy of films (or have one of his hired pawns do it for him) with a notebook in hand, and scribble down a quick note of everything that is mentioned about the past. Clearly he didn't do that. This single sheet list of plot points should have been constantly referred to during the writing process, and before the third script was finalized, every point should have had a check mark next to it indicating that it had been addressed or at least unscrewed with.
Just imagine how much different the shape of Star Wars fandom would be today. Even if I still didn't like the movies, even if the acting still sucked and much of the silliness remained intact, it'd be a lot harder to complain about them without any enjoyment hemmoraging plots holes riddling the things.
-Owen thought Obi-Wan was just a crazy old man
-served my father during the clone wars
-father's lightsaber, wanted you to have it when you were old enough
-Anakin was a good friend
etc.
Pretty simple stuff. All it would have taken. As they say, an ounce of prevention...