Very interesting concept, I was not expecting to play a game like this but with dices haha!
I think the faces of the dice representing the number of point the dice will score is a clever way of pushing the player to try harder shots, to take risks to gain more points!
The only problem I have with those dices is that they don't bounce on walls, so they all end up stuck against some wall and it becomes really hard to push them in an interesting direction. Maybe making the faces of the dices slightly spherical would help them roll better also, to really change the number displayed on the top face every time they are hit.
But still, very creative way of thinking, well done!