"The mana cost reduction is a compensation since him no longer dealing bonus damage to.."

Minions.

I'm really trying to understand why Riot initially went in this direction. Much of the criticism I see on Master Yi is because of his true damage+GuisoosRageblade interaction/on hit. Curious as to how nerfing his damage to minions will cut back on his power that he holds through his current build, which is quite powerful. Can we get a Rioter's discussion on this please?