I'm curious - are the shot-by-shot white-balance differences you're pointing out a new feature of the 2004 transfer, or just something that was always there, and the enhanced contrast and colours have brought them out further ? The reason I ask is there is a shot of the jawas at 16'29" ( for example ) on the DVDs where they suddenly look almost orange - but there seems to be a similar effect on my TR47 copy of the DE LDs.
And, my pet hate ( other than R2 glowing in the dark ) is Grebo - regardless of when he shoots, in the 2004 DVDs he's positively luminous ! But again, looking at the originals, he was pretty colourful even then, and I'm wondering if the new microscopically acurate transfers are just revealing these quirks in a particularly unflattering way...?
( None of which means you shouldn't carry on with the work you're doing, of course. )