georgec said:

R.e. Luke's "Father, please," that comes some moments before Darth's "Noo. Nooooo!" line. I haven't watched the rips, but based on previous versions of these movies it would not be necessary to remove Luke's line in order to add Vader's line. In other words, the order of lines/events in the original scene is:

"Father, please."

"Now, young Skywalker, you will die."

More force lightning.

Vader tosses Palps.

But, adywan and others have watched the rips, so if it's true then it makes no sense at all to me. Those two lines come at different moments.

no, it's his last plea "father" right before he pick up the emperor that is now almost gone because they have lowered the dialogue and drowned the remains of it underneath the first No.