My Personal Proposed Mid Lane Balanced Changes for Patch 8.11
Zoe: Zoe should have more meaningful mana costs mid/late game. She also doesn't need to have that high of a base AD anymore.
Base AD: 58 --> 54
E mana cost: 80 --> 80/85/90/95/100
R mana cost: 50 --> 50/60/70
Vladimir: Using pool should come at a greater cost.
W cost: 20% --> 30% of current Health
Irelia: Her Q offers too much burts against mid lane champions. Also trying to help her early with some base stats bumps to compensate.
Base Armor: 34 --> 36
Base Health Regen: 8.5 --> 9.5
Q Base Damage: 10/30/50/70/90 --> 5/20/35/50/65
Q bonus damage to minions: 70% --> 80%
Yasuo and Zed shouldn't have such an easy time last hitting.
Yasuo:
E damage to minions: 100% --> 60/70/80/90/100%
Zed:
Passive damage to minions: 100% --> 50%
Talon: Talon shouldn't be able to breeze through early levels when he doesn't find an opportunity to go in by simply pushind and last hitting the waves with his W so effectively.
W damage to minions: 100% --> 80/85/90/95/100%
Champions that would potentially need a nerf after 8.11: LeBlanc, Fizz, Twisted Fate, Aurelion Sol.
Camille: her E allows her to deal too much burst dmg in early trades
E
Graves: He haves too much scuttle control in the early game using his Initial Q Physical Damage
LeBlanc: For an assassin she haves too much cc
E Root duration 
Kai'Sa She is allowed to use her Q whenever she feels like it, Without getting punished
Q Mana Cost 
Rakan Making sure he doesnt go too unstoppable after the new Nimbus Cloak Rune release, He is also in a very good state and when played with xayah he becomes completely Broken