Akwat Kbrana said:
Ah, but think of it this way: putting his son before himself like that is an act of selflessness ("not for him, but for his son") which in fact causes Anakin to become the good man that - presuming the PT to be true - he never really was.

Just a thought. Personally, I'd probably never watch an edit that incorporated PT footage into OT footage like that, but if you were to do an edit like that, this could be one "spin" to put on it: a non-redemptive motive results in a redemptive act of selflessness.

I'm doing what was illustrated in the Novelization of ROTJ. When Darth Vader sees Luke being electrecuted he is reminded of Shmi, Padme, Qui-Gon and Obi-Wan. I'll be using flashes of people he loved for his redemption not bad things he's done, but good things.