Quoted from SantaEatsCheese:Cool, but different concepts.
Imagine Whitewater and the long left ball return. Imagine if the first ball going down that return fell through a hole that closed a door, allowing the second ball to pass over and down the ramp. Now imagine a 2nd and 3rd trap door doing the same, with a jackpot at the end of the ball return ramp.
You mean like Doctor Who?