Hey, it' me again.
You have done so much since I played the beta version on Sunday. It's amazing that this was developed by one person. I love this art style.
I think the weakest point of the game is the interpretation of the theme. I believe you could integrate "side-effect" to the gameplay, similar to LinkSider. For example, when the cake passes on a special belt tile it will create new entities on the side or remove/modify the tiles on the side.
Some background music could add a lot to the experience.
Maybe I should have abandoned my game and accept your offer to design levels for this game. I could also create music. We would have 1 great game instead of 2 good games :D