I was on the "Official SWR Site" and read your quote, Ady, that says “When i first planned on doing the saga i wanted to bring the saga together as a whole and not have the PT ruin many of the surprises in the OT, namely Leia being Lukes sister and Vader being Lukes father. I want them to be able to be watched in chronological order."
I was curious whether you have considered changing Luke's name in the OT to "Luke Lars". You actually have the skill and patience to do the audio dubbing necessary, and If the fact that Padme had the twins was removed from RotS, it would be very easy to go all the way up to RotJ without a mention of the Skywalker name.
I know that "I'm Luke Lars, I'm here to rescue you." doesn't roll off the tongue as nicely, but it does keep the mystery going in a way that nothing else would.