Baronlando said:

To me it feels like the Francis Coppola/flashy older brother is more dominant than the father angle in Lucas stories (Milner, Han, Madmartigan, even QuiGon Jinn with Obiwan). Or maybe it just seems that way compared to Spielberg and his recurring parental issues.

You're probably right. Obi-Wan and Anakin is a good example. Even Lucas wasn't sure if he wanted to do a paternal or fraternal thing there.

Anakin in AOTC: "He's like my father."

Obi-Wan in ROTS: "You were my brother, Anakin."

Obviously there's stuff in between the two films that would theoretically change how they perceive each other, but these themes and their relationship were never fully developed.