User blog comment:Care Level/Underlying Systems Rework: Differentiation between Attacks and Spells/@comment-7186381-20140105213312/@comment-9593635-20140106214706

Indeed, the rebalancing would be a lot of work.

I'm not suggesting buffing Riven or Renekton; I'm suggesting that they be adjusted so that they have more options. The cost of giving them those options without making them inherently stronger is where the "lot of work in rebalancing" comes from.