A thought to slightly curb Jinx's hyper-carry power: Increase the mana cost of her rockets
Jinx is dominating the ADCs right now with a 55% winrate and 30% pickrate at Platinum or higher. Sounds like she's a tad overtuned and is crowding out the other ADCs (besides Graves).
HOWEVER, lowering her damage output is sure to make people bitch and moan, so I propose that instead she have the mana cost of Fishbones' rockets increased to 20/22/24/26/28 mana per shot instead of 20 per shot at all ranks. This makes it so that she has to be a LITTLE less trigger-happy with Zap! unless she wants to run out of ammo.
Surely this is a lever of balance that could be pulled, right Meddler?