User blog comment:NydusTemplar/A 'What If' about Champion Kill Rewards/@comment-3970297-20130210094205

Assassins would go ape-shit (in a bad way) from this system.

Some characters need the steady gold income from kills. One example being like Leblanc, who excels in early and mid game on champion killing, but is very poor in terms of farming the lane by itself. Her way of getting money stems more off champion kills over actual farming.

Overall, lowering the income on champion kills will result in longer games, since the rewards from pressing a massive early game advantage would be less that before, making champions the excel in later game win out in the end since early-game champions will lose a battle of attrition.