@twooffour

You made some good points.

Although I would maintain that something like LA battle does not hold a candle to a film like Close Encounters when it comes to emphasise on character.

Although I guess it is about balance.

The depth of character depends on the overall context of the film.If there is too much depth in a character like Luke Skywalker then the whole film can be brought down by that weight.

If there is not enough depth then the character has no resonance and you as a member of the audience has no affinity for the character.

This is where SW reached the right equilibrium between depth and resonance....making you care enough for the character without inquiring too much about what motivates him or where he comes from(like Han Solo).