Riot's Thought Process

Riot: Armor Pen is too strong, how do we nerf it? Let's change it to lethality, which nerfs the early game. OK, now lets give assassins some useful items and ignore their usability on ranged champions. Assassins still aren't strong, hmm.. Let's buff the early game of lethality because we forgot why we even nerfed armor pen in the first place. Hey guys, look at all of these compilations of champions one-shotting people with lethality builds. That's sick! Now how do we buff these items for Lee Sin?