Bingowings said:

I'd keep some of the butchery and child murder in the PT but have masked Vader do it

I think you are nearly there but I hate the child butchery element.

I think we need to just simply have Anakin feel betrayed and confused and have a vendetta against the Jedi Order as a re-incarnated Cyborg Darth Vader. The whole order 66 thing was a huge failure in my eyes too.

Vader should have been shown in suit hunting down the Jedi one by one like a hit man revenge flick, wiping out the people that misunderstood him as Anakin. But perhaps we would be unaware of who he really was. A mysterious figure and assassin.

We need to be able to understand that motivation to destroy the Jedi because he felt betrayed. I would go as far to say that the line between good and evil should become very blurred rather than so clean cut. I want to see that cyborg Vader go after revenge and get it replacing the clones shooting the Jedi to death. That was not the legend. Ben cannot be telling complete and utter lies can he?

But if we were to experience a revenge story of that magnitude which would have been better than what we got how would that then place the Anakin reveal at the end of ROTJ and could you feel happy that he got redemption knowing he had hunted down and slayed all the Jedi apart from the last one which was his very own son... That is what we were told, but it is not what happened in the PT. Actually he "helped the empire hunt down and destroy the Jedi" to quote Ben but surely that would entail him actually doing that also and being part of "The Empire" which was kind of not fully realized in the PT also. I don't know but it really would have been good to see Vader actually at the helm of destroying the Jedi Rather than the clones.

Young Obi-wan vs Darth Vader in suit? Obiwan senses it is someone he knows? The key to making Vader's character Arc really work is that Anakin felt betrayed perhaps because they stole his children and he knew it whilst recovering from near death.