I agree. It's a fun game, but not a great game.
The likeness and voice of Sam Witwer was used for Starkiller. Witwer was Crashdown on the new Battlestar Galactica series, and also played in the movie "The Mist".
The voice of Darth Vader was done by the actor who gives voice to "Chad Vader: Night Manager" on that popular YouTube series.
In the original game, Witwer was also the voice of Emperor Palpatine.