I'm talking about the TK421, why aren't you at your post scene when the two imperial personnel get blasted. on the DVD remaster, you no longer see the blaster bolt actually hit them in the chest, before they fall which is present on the VHS and LD versions but not on the 2004 DVD release. this is confirmed by a number of sites by the way. its subtle but those two bolt hits are missing.
also, one of the bolt hits in the cell bay has been altered the same way too.
as regards the changes my take is this
. original everything, unless the change was a digital recomposite to clean up matte lines. eg explosion of the y -wings in the trench run, snow battle in ESB. or fixes bad work in the original
eg the landspeeder being fixed so it hovers better.
so yes to
6,7,8,9
7 because the original establishing shot of ben's house was rubbish and the CG replacement is a very good matte in keeping with others in the trilogy.
9 because the addition of the ships makes us realise that mos eisley is there and not just a hodge podge of lines on the screen.
12 and 14.
digital dewbacks in mos eisley. the originals didn't work right and these do fit the scene okay, therefore, I feel a nice detail change that would have been done in the original.
23 and 24
cell bay corridor alteration, yes, because that is a fix for a set.
27 yes, close the blast doors was in originally and needs restoring, if it came to it I'd record a new line myself in soundforge and diddle it until it matched the mix.
28 and 29
lightsaber fixes so yes
33,34
better establishing shots of the rebel base
40
replaces crummy matte work
while I wish the original yavin battle to kept intact. I would edit in any original footage that was digitally re-comped and is therefore improved and cleaned up.