Specific Champion Gold Interactions

I think it would be a great idea to add a function into the game that keeps track of how much gold you've earned through a particular enemy champion. For example, if I'm fighting an Illaoi or Heimer, it would give me a greater sense of purpose/accomplishment from the otherwise uninteractive lane.

Wouldn't it be funny to check the gold income from Kalista and see that you've managed to pocket 200+ gold from killing all her sentinels?