OK, what one has to bear in mind here is that all three OT films are a procession of spectacular and hectic action sequences strung together by a gossamer-thin plot. The 'scenes between' are there to move things along to the next action sequence with some mumbo-jumbo thrown in to 'explain' how sword-wielding warriors can still exist in a world full of laser-guns!
There is no 'heros' journey' or even a bildungsroman here. Character development is nonexistent,as are context, background and history. "The Empire has swept away the Old Republic", we are told -but not how why or even how long ago. The Jedi Knights were the protectors of the Republic, but where did they come from? The Sith are like Jedi but from the Dark Side of the Force. But the Force is an energy field, we are told. How does an energy field have a Dark Side? Is the Force sentient? Nothing is explained, or has a background, and if we hit a problem, we do a deus ex machina (Han returns to help Luke, Obi-Wan has a ghost, Vader is Lukes' father, Vader turns on the Emperor).
It's all about the action scenes.
Also, Campbell got it wrong. A Hero, in the Greek sense, was a moral example. But the central figures -often called Heroes - in myth undertook a different journey. They were pawns of Fate. They were destined for a specific task. They were trained and tested. They completed their task. But they all had one flaw or made one mistake for which they had to pay the price - often but not always their own life.
Theseus abandons Ariadne and forgets to change the colour of his sails - so his father commits suicide.
Arthur sleeps with his half-sister (albeit unknowingly) and is eventually killed by their son, Mordred.
Achilles argues with Agamemnon over a slave girl and refuses to join battle. As a result, his friend (lover?) Patroclus gets killed by Hector. Achilles goes berserk, kills Hector and refuses to give his body back for a funeral, defiling it instead. An act of sacrilege that brings about his own shameful death.
Rustem fails to return to Tahmineh as he promised, so later he accidentally kills their son, Sohrab, only realising who the boy is when he sees a bracelet on the body he gave to Tahmineh. So he rides off a cliff.
Frodo Baggins gives in to the lure of the One Ring, leaving it to Smeagol, as per the Rings' and Faramirs' curses, plus Tolkiens' dramatic irony, to fall into the flames and take the Ring with him. Afterwards, Frodo has to leave Middle-Earth (to all intents and purposes, die) rather than enjoy a full life.
Luke Skywalker has no character flaws because he has no character. Like everything else in the films, he's just a link to the next spectacular action sequence.
Because, like WWF wrestling, the original Star Wars trilogy is all about spectacle. All sizzle, no steak!
