Can't be Cliffy. He's on a moon base. Also we never actually see Soundwave die, although from what I've read, that is the official account, even if it was cut from the final release of the movie. The last we actually see of him in the movie I think is inside Astrotrain during the fight for leadership.
I'd love to see an updated release of the movie, better restored and the film rescanned and cleaned up.
Edit: I would also like to add, that Wheeljack getting an off screen death, and no air time was criminal.
