The issue we have had with Camille is that she is HEAVILY skill skewed to the point where she can be pick/ban in pro/highest levels of play while also being one of the weakest champions for anyone outside of that top end skill bracket. This is why she has had to be nerfed, so that she doesn't always dominate top level play.
Everyone of her abilities has a meaningfully high skill component to it. This creates a lot of pressure to use each skill optimally, and adds alot of complexity that can't be accessed outside of that elite play. At some level this is core to the champion/kit, but we believe it doesn't need to be as extreme as it currently is. Because of this we have tried some stuff internally focused on lowering her skill floor, without drastically reshaping her abilities.