Have you considered doing an expanded version of this game? I can see the potential for adding new mechanics and concepts that build on the foundation that already exists.
Hey, apologies for the super late response. There are currently no plans for an expanded edition of Rabbitball, though I have been considering it, since Fun Fact; there were initially going to be 3 Arcades instead of 2, with a "Cabinet Turner" mechanic that would flip the cabinet to flip gravity, but I trimmed down to maintain the game's scope.
Thanks for the suggestions though! - Kolo