The idea of rocket league brick breaker is actually a really fun cool idea! Even though it's relatively simple in its current form, its actually quite fun.
There's a lot you could do with it too, like adding the sound of the bricks breaking, adding powerups and different block types, but the core gameplay is super fun! I love the chaos of racing back to stop the ball hitting the wall after getting too ambitious.
I think if the car was a little slower to break and a tiny bit more "floaty" on the steering, it'd add a good amount of pressure to the gameplay - requiring more focus.
Overall, solid concept, quite fun!