If you tone down her damage but do not touch her utility/CC, Camille would make for a good support

I currently play her more as a SUP rather than TOP or JG because she has a great kit designed for a protective yet offensive support. Her E can be used to intercept dives and engages from ganks while also being able to make picks. Her W is a good peel with its slow for when you are against champions like . The ult can be used in the same way as her E. To peel, counter dives, small amounts of CC, etc...

Her damage is just a bit too high though so you end up taking the kill often. While that isn't the worst outcome, it is better to actually have the ADC get some kill gold too lol.