Thanks for your detailed feedback!
I originally wanted to have more kinds of bumpers and a bigger playfield with layers. I also wanted to include some kind of 'boost' pads that would have given the ball different effects (some ideas were speed boost, invincibility, or a random bounce value). The bumper hit effect should also have been enhanced with a small particle effect. Lastly, I wanted my playfield to fit the theme better. I envisioned a flooded world (so the 'no green' limitation is checked) with a few last skyscrapers reaching out of the water