Here's what I did today:

Remapped all the audio clips I added so that speech comes out of the center speakers only (in the Phantom Menace scenes and the vader breathing I had put in were panned 5.1)

The music I added no longer comes from the center speaker

I replaced the Vader breathing with a high quality one for his reveal and it now pans through the surround sound as Vader walks off camera - from C to FLl to SL

"The Imperial March" featured in Vader's reveal is now turned down and fits better with the film.

One of the fly-bys from a TPM scene now has proper 5.1 pan (before it just played out of all the speakers, now it starts in SL and makes its way up to FL).

Sepiah effect in TPM scenes now have better contrast.

Finished retouching the clashing music from InfoDroids mirrored deaths scene.

Re-inserted the AOTC scenes during the mirrored cantina sequence.

Fixed the "flash" during Vader's flashback sequence to the last time he saw Obi-Wan (still missing a sound effect that I mentioned in the post above).

Fixed clashing audio and the volume of the fade out to the credits.

Replaced the songs "Honour Him" and "Now We Are Free" in the credits with Lisa Gerrard's "Maranatha (Come Lord)" to better fade with "The Shroud of the Dark Side" and "Briseis And Achilles".

The shortened "Briseis And Achilles" is now fades through the cut smoothly.

Fixed a few segments of audio that were out of sync (speech and fly-bys).

Re-adjusted the timing in a few fades.

Still left to do:

Replace six more AOTC segments (I found a few I missed).

Double check every audio cue/fade and video transition.

Thank God I only have one class on Wednesdays!

EDIT: Once I've rendered the video, I've decided to make a commentary track and also an MP3 of the credits music.

EDIT 2: I'm also thinking of making myself a new logo intro. We'll see.