Quicker to list the changes I don't like. They're all in ESB.
The dialogue change from "Bring my shuttle" to "Alert my start destroyer to prepare for my arrival, and have my smoking jacket and slippers ready. Oh, and put the kettle on for I should like a cup of hot chocolate, too." And the butchering of the subsequent chase scene. All unecessary and I'd love to see them removed.
Other than that, I'm fine with everything.