Sure, let me see if I can remember them all xD
-Color correction throughout (Incomplete. Only the first 20 seconds here have color correction)
-Added classic ANH music for the duel
-Cut some silly-looking saber moves
-Removed Dooku and Anakin's cheesy dialogue
-Intercut battle shots during duel
-Recoloring blue blasts to green (incomplete)
-Shortened duel by consolidating Dooku's force moves on Obi-Wan
-Created the illusion that battle damage causes the platform to collapse
-Added extra lightsaber sounds akin to the OT (RotS sounds are too soft)
-Drastically recut Dooku's death
-Added new music after Anakin kills Dooku.
-Anakin no longer speaks after killing Dooku. His eyes tell the story.
-Palpatine's manipulations are almost entirely cut. It's too early for him to be so intense.

I'm glad you're liking it!
And you're right - the second half of the clip is not color corrected yet. I guess I just forgot to do that. But don't worry, I won't let any weird cyans infiltrate my final edit!