“The Star Wars – Rough Draft” script from 1974 is an interesting read too, and certainly worth it for seeing Vader and Luke’s father being those entirely two different characters.
JW Rinzler was so taken with it he eventually persuaded George to give him the okay to do an official comic book version of it, released in 2014, as “The Star Wars”.
The official trailer for it is a cool watch: https://www.youtube.com/watch?v=l0uTm-4XZQU
Announcement from Dark Horse comics: www.darkhorse.com/Blog/1349/lucasfilm-and-dark-horse-announce-star-wars
“The Star Wars-Taking a Look at the Comic Adaptation of George Lucas’s Original Script”: https://www.youtube.com/watch?v=pmNOOk5-TDg is an 18 minute video overview for the 8 part comics book series.
It is also cool to see Vader “character” essentially being 4 separate characters at this stage, before being eventually merged, blended, and revised, with traits and attributes belonging to Prince Valorum, Kane Starkiller, Annikin Starkiller, and possibly others (Darklighter is a Jedi who betrays the order to go join the Sith - introduced as a storyline in the next draft), to become the more familiar character of Vader that we see in the films.
Then a lot of scenes in ROTJ would need changing from a redemption arc to a forgiveness one.
There would probably be a whole Disney+ series with much fan service flashbacks just for that! 😉