I had an idea for the Emperor, Vader lines. In the OT theres is no use of the word Sidious, Sith or Padme. So I had a few ideas. Maybe somebody can change them around. Here they are:
VADER: What is thy bidding, my master?
EMPEROR: There is a great disturbance in the Force.
VADER: Yes I have felt it.
EMPEROR: We have a new enemy: the young rebel Luke Skywalker son of Skywalker
VADER: How is this possible? I, I couldn't have he wasn't alive I felt it myself.
EMPEROR: Search your yours feelings Lord Vader, you know it be true.
VADER: He's just a boy Obi-Wan can no longer help him.
EMPEROR: The force is strong with him. The son of Anakin Skywalker and Padme Amidala must not be come a Jedi.
VADER: If he could be turned, he would become a powerful ally.
EMPEROR: Yes, yes he would be a great asset. Can it be done?
VADER: He will join us or die, Lord Sidoius
EMPEROR: Good, good then the Sith will rule once more, and we shall have peace.