Sivir's Q: Mana Restore on multiple targets?

From what I have been reading in the Sivir discussions, she still has mana issues (I don't think having a mana restore that relies on enemies is a great idea btw)

Could it be made so Sivir's Q restores 4% of the mana cost whenever it hits an enemy?

If Sivir is trying to chunk an enemy champion, that's a 8% return. Not much. You could even increase the base cost to make it so she technically gains nothing.

But if Sivir uses Q to farm (a thing she is meant to be good at) then it can restore 48% if she hits all 6 minions. 72% if she hits all minions, a siege minion and both enemy champions.

It would also mean there's a point to her hitting more than one enemy in a team fight with it.

This is a much more proactive way for her to conserve mana that lets her farm more effectively without increasing her mana for chunking champions.

Maybe just give her Shield some flat mana regen when it isn't on cooldown and actually have popping the shield grant a steroid? Maybe attach the steroid to the Ultimate, same as her W, so it doesn't matter if she ranks W or E first for the steroid effects.