Speaking of weird compositing, one detail that I didn’t notice until recently was that some of the ships are composited into that first shot flipped the wrong way. Here’s how they should have looked, based on the lighting:
http://www.framecompare.com/image-compare/screenshotcomparison/7DK7PNNX
You can also see the error of the TIE composited over the Falcon’s antenna dish.