Using Ian’s actual voice is the way to go versus the robotic AI. Also, the change to Vader’s voice does somewhat make him sound like a younger Jones as well even if it still a bit off. Then again, I believe the closest you will ever get to the Vader voice from a New Hope is using the voice actor Ryan Golden who does an excellent impression. This is not something that really should be expected as your edit of the voice is more than passable.

P.S. It is much appreciated that you are constantly improving upon your edit of Rebels.

On another matter, in your Tales of the Rebels episode about Caleb, the Bad Batch portion works out really well. However, I personally did not find the comic book story with the smuggler compelling. I think it might be best to just go with the name change being done to hide his identity to hide from Order 66. I know that would make the episode way too short so it could just be left as is for those who want that story.