I really enjoy the arcade-like flow and elegance of this game. All it really needs is some good music and gamepad support to make it complete.
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