Great coaster, one of my personal favourites. Shame the queue's a bit long, but I really enjoy riding it. I love when you go down the drop backwards, and then you face downwards on the horseshoe, peering down below.
When the theming contract runs out, I think it should go back to Spinball Whizzer, but I reckon that the theming could definitely improve. There's very little except the wall and the steel balls, and there could be the things that a pinball table has. For example, there could be the round thingy that reflects the pinball away, and it could be used where the ORP is, and at the change of direction.
So yep, it's good!