Congrats! I'm glad you found a prototype worth developing.
I'm not sure whether Pinball Dungeon will get all the way to release, but I am still developing it and that's my current intent. We should coordinate a bit to make sure we don't step on each other's toes. My focus for this game is on memorable experiences (and chaos) as opposed to tactical depth. I plan to do more to capitalize on the fact that it's not quite actually turn-based, play more with unique physics objects, and do more with dungeon generation and the exploration side. I'll probably be going for a cute to cute-dark art style. Target player demographic probably skewing younger.
Do you know what parts of your design you're focusing on?