The problem we have is that we all overanalise things when you live and breth the character for that long you cant help but critisize things, you notice things in more context and complexity.
I'm sure we will all absolutly adore the third film s much as the other two as a whole story of the trilogy. However there are always going to be things that we will see and think " iwish they did this and why didn't they show this or they should of done that another way"
At the end of the day it' a good film because even years after it's release we are still talking about it now in this detail. if it was garbage then it would not of affected us at all and would of been forgotton. the very point that we are this passionate/dispassionate about somthing shows it had an effect!