They could just make "I dunno, I'm making this up as I go." their official motto, as they now own Indy.
There's some truth in that. I posted earlier what I think is their strategy regarding hiring talent to make these films. If LucasFilm Story Group has a rigid story arc in place a lot of very talented directors would take a pass on Star Wars. To attract innovative new talent you need to provide creative flexibility. So not being dogmatic to a fixed story makes sense if you want variety of directors. The only film previous to the ST directed independently was ESB. Every other OT and PT film was effectively the vision of one man.
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Exactly what I aimed at in a previous post.
The storytelling may work in an episode of a series with a huge story arc. But it IMO does NOT work for a movie that IMO NEEDS to stand on its own feet, should be watchable on its own. Granted, except for ANH no SW-movie should be watched out of context. But if you choose to, you CAN do that and they work as movies in their own narratives (AOTC is not that good, though, it IMO suffers from the Detective story vs. the rest).
The subplots that IMO feel hornshoed into the main plot are the best examples.
I do not think that it was GoT, but a lot of other series and movies with an episodic narrative style.
Still, IMO that does NOT work for a SW movie.
If you want to tell stories that way, then DO NOT degrade a main SW episode to an episode in a MINI-Series, but just go straight to TV and create a series!
I dont think any SW film other than ANH has any hope of standing on it's own.