I have completed the 50GB versions of the covers. Everything is up here: https://drive.google.com/drive/u/1/folders/0B1FmaBWRenvTb19faV8yUDhGTVk
All I did was change the text on the back. SW and ESB had only slight alterations for the number of commentaries and languages. ROJ had extensive additions because the Trilogy Documentaries are included in the second ROJ disc.