Can we talk about Darius for just a sec?

WTF. Where is the Darius nerf? We have Skarner nerfs (now live) and even GAREN nerfs on the PBE, but nothing for Darius? Nothing to do with his stupid amount of passive damage? Think on this: Infinity Edge has 80 damage and costs over 3000 gold. Darius' passive, at lvl 6, gives him 80 AD. FOR FREE. LITERALLY FOR PLAYING DARIUS. If you've never played Darius, here's kind of how the lane goes.

Level 1: Fight the enemy. Level 2: Take pull, ignite, then kill the enemy. Or take tp instead and still kill them. Level 4: Kill enemy again. Level 6: Kill enemy and their jungle who is banking because you're Darius.

Most of your damage comes from passive stacks, and just keeping them bleeding your opponent down then eventually killing them when they are low enough. So, for playing like you're supposed to, at level 6 you get a free IE in damage because you don't hurt enough. "Balanced."

Okay, fine, you say. So you don't have to build as much damage and you can get tankier, so now you can survive a little longer in team fights, that's pretty fair. He can still be kited or CC'd and then killed, it'll just take longer. BUT WAIT THERE'S MORE! For hitting enemies with the blade of your Q, (a.k.a. casting Q in a team fight because that's what you're supposed to do, a.k.a. PLAYING DARIUS) you now get healed for no, not a set amount, but UP TO 30% OF YOUR MISSING HP. Remember that your Q, as far as I can tell, is not interrupted if you are CC'd while it is casting. So if you're Darius and you're almost dead, simply spam Q, and if you've built a Spirit Visage, or if you haven't, get healed for a massive amount simply for playing. Boy, that was tough!

I just don't understand what Riot was thinking. It isn't like they hard nerfed his landing phase then gave him a great late game. If anything, your laning is even stronger since now you have sustain. If a Rioter or anybody who plays Darius extensively has anything to chime in on I'd love to hear it, because I honestly don't know what the reasoning behind this huge buff was. I played a game recently where I, the jungler, got my top laner (Gnar) two kills and a boatload of farm up on a Darius and the next thing I knew Darius 1v1 dove him under tower, killed Gnar (who was IN MEGA FORM) and then flashed out and lived. Somebody explain a weakness of this champion to me please.