Thanks all for your kind words and your good ideas ! I will see what I can do.
Here is the part 5 : Anakin's dream
http://www.youtube.com/watch?v=5yRzR59nyj0
No major change here (exepted the massive cut of the romantic sequence).
Vader's mask and breathing added at the end of the dream...and new music (which brings intensity). I particularly love this part, it expresses very well all the story of Vader...and the "Williams eighties spirit"