Originally Posted by Xhieron
Let's encourage aggression by ...
Wait a second. You're trying to get people to be more aggressive by punishing their sustainability? I'm not sure I see this.
Then you don't understand how the game works.
The reason good players are rarely aggressive is that unless you can be sure to get the kill it will not be worth the effort. Not only do you take nearly the same damage from the minions, but you're also missing out of CS without gaining any benefit from it because sustainability is so insanely cheap and accessible.
With more expensive/less effective potions you now accomplish more by forcing your opponent to use one and thus well,timed harass (and hopefully a generally aggressive laning style) is rewarded.