I think you shouldn't add the whole "Vader still loves/longs for Amidala" angle to your edit. The reason why is strictly a personal point of view but in my opinion the whole turning to the dark side because he loved her soooo much that he would do anything... it completey destroyed the whole character arc for Vade in the orginal trilogy. That arc culminates in Jedi when Vader decides to save Luke.... why?.... because he loved his son.... so let's see Vader turned to the dark side because he loved his wife.... and he came back to the light side because he loved his son... so the morale of the whole story is... who the hell knows.

Now I was one those folks who reserved judgement on the prequel trilogy until I saw all three and now that I have --I can honestly say .....