A funny way to deal with canon

[vanir]

Brilliant! I agree completely, I was a kid when Star Wars was originally at the theatres and I remember tossing conjecture between schoolfriends as to what the Return of the Jedi storyline would entail when it was still being made (I remember when it was promoted under the name of Revenge of the Jedi, it was changed near release date to Return of the Jedi because the word "revenge" in a popular "childrens movie" was politically incorrect back then).

GL actually ratified much of the storylines of both ESB and RotJ during production, he had planned out the original SW much more elaborately in preproduction but all of these were designed from the start as screenplays rather than fantasy trilogy novels, which tend to invent the universe first and set all the rules and plot lines and then set characters within it.

For example GL famously was undecided about the Darth Vader is Luke's father even when production of RotJ began, when he first wrote it for ESB and it was included in that movie it was intended to be a manipulative lie typical of a Dark Jedi, who uses lies and manipulation to achieve his ends rather than virtue and goodwill like the Jedi Knights.
GL even said he thought it was a bit soap opera for his liking but he came around because it seemed to be the popular assumption among fans of ESB, nobody conceived that Darth Vader was just lying to Luke, basically so GL simply went with it.

This kind of marks his philosophy during each individual movie's screenplay ratification and production. Fandom before creative ideals, it was after all a business venture.

Originally the Lightsabre was just the standard secondary weapon of the SW universe. All Stormtroopers carried them, and all lightsabres were blue bladed including Darth Vader's.

There is absolutely every piece of creative room for individual gamemasters to recreate the SW universe in a way which best represents the inspiration of themselves and their gaming group.