The question... Is Camille Broken? Possible E nerfs if needed
In the right hands, yes. Her kit allows her to easily steamroll over badly-positioned targets, especially ones near terrain. However you aren't invincible with the champion, so you can't dive 1v5 and expect to do much (well, maybe.)
How do we nerf her without completely ruining her 1v1 damage? Well for starters we should probably increase her E cooldown because 6 sec with max CDR? Tf is this? She's more mobile than Hecarim in URF (no, but you get it.) I also think her E shouldn't be able to pass through terrain for such a low cooldown; allowing her to escape from literally every unfavorable fight, and spring up on unsuspecting targets. Because face it, it doesn't matter how fed Vayne is, if she gets jumped on by this knife-lady she's a dead ADC. Either remove that feature or just super-nerf the cooldown (from 10 to maybe 14-15sec at max rank).
But I don't want to see her damage go away because she's so strong at 1v1's, and her ult is amazing for clearing teams. I also love the Fiora-Orianna-like champ design. Good job riot :)