There is over 800 pages here, so I don't know if someone has mentioned this. I kind of liked the new scene in the special edition where Sidious tells Vader that Luke is his son, but earlier Vader says something like "Skywalker must be with them" referring to the base on Hoth which is in contradiction to the later added dialogue because he wasn't supposed to know that Luke was his son yet. Maybe that's something to correct in your edit.

Another thing is that the added dialogue (when Sidious tells Vader about Luke) goes against the opening crawl that says Vader is scouring the galaxy looking for Skywalker, which means he knew Skywalker was his son.

I'd change the opening crawl and change Vaders line from "Skywalker is there, i can feel it" to "the rebels are there" or just remove it.