-2004: We have a new enemy, (camera front view of Emperor) the young rebel who destroyed the Death Star. (camera front view of Vader from the shoulders up) I have no doubt this boy is the offspring of Anakin Skywalker. (camera front view of Emperor)
I will be changing this line to just "young Skywalker". I would have preferred it to be "Luke Skywalker" but no where in the saga does the Emperor say "Luke"
As for the vane it is a bit of a design flaw. I think that Luke was supposed to have reached there through the long tunnel but they put the support pole in the wrong position on the matte which caused confusion. A small tweak to the matte should be able to fix this.
The Obi-Wan line about Yoda i would prefer to keep this as it is. I don't want to have to changed much in the OT just because of the mess that the POT caused. I have some plans to fix this error in the PT and not have OBi-Wan as Qui-Gon's padawan but instead have Yopa call Obi-Wan his padawan in some instances in TPM or maybe just omit the whole padawan thing with Obi-Wan altogether