[steelerborn]

Well your assuming that the game is using "balls"
there have been loads of other shapes in the past

For instance the balls would be knocked off a lot.
But if it was an object of any shape with a hook to latch on to the rail,
well then a track would make more sense.
You would have teams fighting over placing certain objects
in one area and others in another. Different areas with different objects
would score different amounts of points. With the most hard to reach area scoring the most points.
This could tie in to recycling.

Just an idea, we have no idea what to expect.
Its going to be a fun year