I'd be fine with Graves if he wasn't Tanky
He isn't broken rn but my god is he frustrating as fuck to deal with. He's ranged carry with AOE burst thats as good as kiting as Vayne. Except he does 3x the burst; Which I'm PERFECTLY OK with, as long as he isn't so god dam tanky. I'd be fine with him getting even more damage as long as you remove his tank stats. It's incredibly frustrating having deal with it especially when they're good at kiting since he can spam e.
Also added onto the fact the items he builds; (Death Dance and Phantom) make him even tankier. Its annoying enough being one shot by a Tank Volibear. But at least he has to run at you and can't kite.