@TackerTacker 👍🏻👍🏻
Great idea, great job!
What immediately comes to mind (maybe you had the same reaction to your own prototype) is to have the ball break four cells (the one hit, the diagonal neighbor furthest from the ball, and the two shared neighbor cells connecting those two into a 2 by 2 square).
Free bonus: here's one of my old breakout ideas from high school that I never coded up because I'm so lazy but it's to replace the Pong paddle with pinball flippers and the traditional "breakout physics" with pinball physics. Might be wholly unsatisfying in actual play, I never got to test it, just dreamed about it when playing breakout games.