Here is a second version for Mace Confronts Palpatine / Sidious revealed
http://www.youtube.com/watch?v=0fnK-O48z6Y
(I just noticed that there are small sound problems )
After long reflexion, I think there are certainly too much little modifications concentred on the same short sequence and this addition of small things may be disturbing.
Having my head in this sequence for so long, things seem natural to me, but I realized it could not be the case for everyone...and too much little modifications, too much imperfect additions (like dialogues) doesn't help.
So I decided to keep my radical approach but slow down on little things and make little concessions (my level of tolerance is now 0,1).
Thanks to those (rpve included) who helped me to realize this. Every comment here really help me to achieve a better edit without changing my vision...it's really constructive.
(good idea Jacobss to remove C-3PO)