As someone who has a lot of fun playing Camille, here are some nerf idea that would be fair.
1- W inner part doesn't deal any damage. The point of this spell is to hit the outer part, there shouldn't be even a slight reward for landing the inner one.
2- E doesn't deal damage. It's probably one of the best mobility spells, gives attack speed AND stuns the target. The damage is just not needed and she would still put out tons of damage anyway.
3- Ult ends if she dies. At this point it's more rewarding to CC Camille than to kill her. If she dies she shouldn't be rewarded because it means she failed as a diver.
4- Camille second Q should just be an auto attack reset if used before the 1.5 second mark. If you decide to use it right away you shouldn't profit extra damage.