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Originally posted by: Commander Courage
Well, it wouldn't be a "happy ending" at all.
He relays the technique of retaining one's identity after death to Obi-Wan and Yoda, reflects on the mistake he made with Anakin, and then fades into the Force forever. Very bittersweet if you ask me.
As for Tarkin, I see where you're coming from (and I agree with characters such as Mon Mothma), but Tarkin is the #2 guy in the Empire in ANH. That warrants some sort of backstory in RotS.
I happen to agree with commander here, I don't want Tarkin to have a large part, but at least have him stand in the background and say a few lines.