I have not read the entire thread. I have only read the first three pages. I have a few thoughts:

Very few individuals watch the prequel trilogy first, so editing the greatest revelation in the original trilogy (“No, I am your father”) is illogical. Presumably, anyone who wishes to watch the Star Wars film series will begin with the original trilogy and then watch the prequels.
Even if the audience is aware that Darth Vader is the father of Luke Skywalker, the revelation still works as an example of dramatic irony and as a profound revelation to Luke.
Obi-Wan lied to Luke, but that is not inconsistent with Obi-Wan’s character. Even exceptionally moral individuals may tell a lie if there is an exceptionally compelling reason to do so. If Luke had known that Darth Vader was his father from the beginning, the temptation to join the dark side or to confront his father immediately would have been too strong.
The suggested dialogue edit in from “Your father wanted you to have this” to “I wanted you to have this” is sheer brilliance and would resolve a plot inconsistency with the prequels.
I would also suggest cutting Obi-Wan’s line, “I don’t seem to remember ever owning a droid.”
Another quick edit: change Leia’s dialogue in A New Hope from “You served my father in the Clone Wars” to “You served WITH my father in the Clone Wars.”
No flashbacks to the prequels in the Original Trilogy.