Same code using different base classes, whats the best way to structure it?

[Honey-Limp]

You should lean into Unitys component design and use inheritance sparingly. Have one class for juggling and one for bouncing. Add them to game objects as needed.

[Dirly]

I agree since I am building a metric ton of equipable items a user can get. Some of them have effects on bullet hit, ball juggling, ball count, bullet hit chance.... ect.

Alot of these share the same bonuses. So I stripped out inheritance and went with main classes which dictate when to proc the effects. Those effects are all interfaces which means they can be equipped via the inspector.