[{quoted}](name=Blu Blizzard,realm=NA,application-id=3ErqAdtq,discussion-id=vcimKyQQ,comment-id=0003,timestamp=2016-07-30T07:51:24.655+0000)
I feel like Ahri's passive (and the whole champ right now) is at a good state. The healing is not very significant during early laning phase, and scales quite decently during mid and late game. I do feel like changing Ahri's passive a little bit would be nice, like a breath of fresh air. Maybe something like every 9th charge, her next ability would still heal for each enemy hit, however her next ability would ALSO deal a little extra damage (like, a small ap scaling, 5% or so).
Of course there will be some scaling differences/nerfs here and there for her damage and healing factor, but I think it could work. It would reward Ahri for playing aggressive from time to time, since her current passive encourages a passive laning phase. It would fit for many different playing styles. 
ahri is already awarded for playing aggressive.
you don't get 9 charges of her passive by "stalling" like the OP suggests. You have to spend mana on minions and nuke their hp down to get that sustain. The more aggression you put out the more you heal. The more you push the lane the more you heal. Ahri is actually one of few sustain champs that actually gets more out of being particularly aggressive rather than passive.