Peter, you're not missing anything much by seeing Billy, I feel it worsens the ride as the ride doesn't really get up to speed as it just keeps stop-starting, he basically says along the same sorts of lines as what is said in the film 'hello I want to play a game', 'live or die, make your choice', 'this is what happens when you lose' some thing like that, and talking about changes to the ride, I personally think that no further modifications will be made, maybe a smoke effect or something coming out the bathroom scene/inline twist. But apart from that I don't think there will be anything else.