When Luke looks out the window from the Death Star, the barricade of Star Destroyers positioned to keep the rebels from escaping doesn’t seem to cover much area. Even from Lando’s view when he’s looking at the Star destroyers up close it looks like he has plenty of open space below to escape. The rebel ships could simply fly up or down to get away. I always thought it would be advantageous for Admiral Ackbar to watch Wrath of Kahn, where Spock explains space is three-denominational. Moving the space battle closer to Luke’s window and filling the entire screen with Star Destroyers would show that the rebels were trapped with nowhere to go.

Also, this is something blatant that will probably be fixed without me mentioning it, but there is a shot on the speeder bikes where Luke is talking but not saying anything. It looks like a re-use of the shot where he tells Leia “Stay on that one, I’ll take these two.”