The Force Unleashed's protagonist could have been canon

Starkiller, a new original character introduced through Star Wars: The Force Unleashed and its sequel, actually became quite popular with Star Wars fans, to the point where many asked for Lucasarts and then Disney to further incorporate the character into the various stories. However, as the reset of the universe happened, Starkiller was forgotten, but it turns out he was very close at one point.

During a recent livestream on Twitch actor Sam Witwer, who was responsible for the voice acting and motion capture of Starkiller, revealed that the character was considered to appear in Star Wars Rebels, and in the process enter true canon.

Apparently, Starkiller was supposed to be one of Vader's Inquisitors, but this idea ultimately fell apart due to the character ultimately being too powerful to fit comfortably inside the universe. Would you agree with that?