I'm sure Ady's getting close to wrapping this thing up, and this issue may have already been brought up and I missed it in the 1,000+ pages, but...
To me one of the biggest annoyances in ESB has always been the sound effects of the lightsabers at about 1:48:30 (the exchange after Luke walks back inside from the balcony below the broken window). Vader attempts to take Luke by surprise and delivers about four blows while Luke blocks. But the "motion hums" of the lightsabers are nowhere close to what you see. There are way too many and, in fact, it sounds almost rhythmic, like the SFX guys were playing around trying to make "music" rather than actually follow the scene. Is it just me or has anyone else noticed this?
I know Adywan has already poured a lot of time into this project, but given the magic he's already been able to work, going back and inserting a few different lightsaber sound effects at this point could make that scene seem more natural and enjoyable. Again, my apologies if this has already been brought up.