The only thing that seems to me to make sense is barring continuity issues aside is, That the main star wars story is about 1 family the skywalkers. And even continues into the expanded universe with han and leia's children, and luke and mara's. the other stories to me have always been filler, or interesting side stories. That anakin and luke were so much alike, but made different choices and went down different paths. That as lucas has said repeatedly, are we going to make the same mistakes as the last generation and fall into the same pitfalls as our fathers did before us. we must learn from the past generations mistakes and pass that onto our children.