I think having a well known personality involved in the Doom movie is overall a good thing. However, if the movie becomes a Rock vehicle filled with stupid "rock-isms" or cute tension-alleviating wisecracks, I think the overall impact will be negative. I don't want to hear "Smell what I'm cooking" as cyberdemons are wasted. The space marine should be silent (or nearly so), just like in the game.
ZigZang