User blog comment:Care Level/Underlying Systems Rework: Differentiation between Attacks and Spells/@comment-7186381-20140105213312

I mean... AD casters are a lot, lot better off than you present them as actually being here, namely due to the existence of Ravenous Hydra. You don't actually need spell vamp when for your autoattacks and for Hydra's active you're AoE lifestealing everything.

Now, this SOUNDS good, but you'd be running into a nightmare of rebalancing. What about Kog'Maw, now that his Q is essentially an autoattack that has resistance shredding? Why do you want AoE crits on spammable skills? Fishbones has obvious tradeoffs; I don't want to see an AoE critting Cull of the Meek from Renekton. Renekton honestly doesn't not need a buff, nor does Riven. I mean, Jayce's golf swing has a 1.0 bonus AD scaling, so I fail to see your point about that one. And AD Nidalee needs to go die in a hole; AD Nid is incredibly toxic because she's ranged, you build her bruiser, she has a heal, and she has absolutely mindblowingly stupid burst with a Trinity.

So yeah, I don't think this is in any way a good idea.