Bouncing Bomb's design barely fits into it's corresponding archetype, allowing you to hit the ground directly below your enemy, thus double hitting them and placing a trap at the same time. It does nothing when hitting the enemy directly, it is unusable on other archetypes, despite being a bridge between them, and makes grape bomb overly reliant on itself. In light of a new Aspect that increases the number of bouncing bomb bounces (which will go into the sky if bomb is used properly) I propose a simple change: make it pierce once instead of bouncing.
Piercing would retain the essence of bouncing bomb, still allowing you to combo 2x bomb + trap by targeting the lower part of the enemy, while making it much more usable by both bolt and sharp, making grape bomb an independent spell, and giving use to the Aspect upgrade (more pierces is infinitely more usable than more bounces).
Grape Bomb may need a slight buff, and the Aspect may need a slight nerf, but overall I believe this small change would make a huge difference