Re: What did Lucas do?
I enjoyed the progression of Vader from a "whiny teen" to what we saw in the OT. Would it have been better to have Anakin just waiting to turn to Vader? Adds more depth to the character and the OT IMO.
By making Anakin whiny, no one actually cared about his path to becoming Vader. There was no moment where we felt for the characters downfall because we didn't care about the character.
"If we're going to be damned, let's be damned for what we really are." - Jean-Luc Picard, "Encounter at Farpoint"