re the lightsaber retracting, I think Sojourn may have hit on it, and I must admit I've only watched it through my computer and VLC so excuse me if it sounds 'right' when played through a proper surround system or if the sound mix isn't final, but I could barely hear the sound effect of the lightsaber retracting, and I think that might be what is making the retraction look slightly slow (?) maybe the fact that it is also the only time in the saga we see a lightsaber retracting from that close an angle that it looks a little strange?

as a side note, just watched the scene of Luke's hand getting chopped off in FRAME BY FRAME motion and I love the way you've shortened his arm/sleeve so that it looks correct, amazing work!!