Hulk should be intimidating! The roar gave it a huge character, people stopped to watch because they could hear it coming. It's like Kumba has a great roar like a lion, Nemesis has a great roar to intimidate like the monster it is.
Okay, Hulk's roar was extreme and I get the turning it down due to locals, hotel guests etc but it still needs something. From the videos I've seen it's one of the quietest B&M's. But, when Swarm opened over here it was and has developed a bit of a roar now so as time goes on it will get louder. But still a shame it is SO quiet.