I apologize if anyone else has already pointed this out, but in addition to the widely-known fast receding of the Star Wars logo in ANH in '97 and later versions, the appearance of the logo itself was also redone (hastily, it appears) in '97 to look thicker.
I mention this because I just noticed it, and it’s not mentioned in the Star Wars Visual Comparison photo gallery.
Also, the D+ (2019, well technically 2012) version seems to be a tad thicker, but I’m not sure if that’s due to other quality factors. But it still has the same messy strokes as the '97 and '04/'11 versions.
http://www.framecompare.com/image-compare/screenshotcomparison/DPGGWNNX
-IA