NGL I would love a meteor level (where meteors fall from the sky and splits into pieces on contact with the pins) or a grinder kinda level (where the balls have to go though a windmill contraption.
Meteors sound amazing! I'm working on a sunrise level now :D
And yeah...that's an interesting idea with the windmill too. Having balls go through different obstacle courses. That would be really cool! Maybe if we can manage to make money on the full version of the game, we can DLC cool stuff like that.