Orianna is just a mess of overpowered
Even if you shove her to turret through a miracle she can still last hit well from her passive
She has spammable AOE damage with an AOE nuke that slows YOU and speeds HER
The W alone should retain it's damage potential if it can close gaps AND create them at the same time.
Overall balance changes should give her some more risk factor.
Her Passive shouldn't work on minions, and the ball shouldn't be able to be possessed by anyone but her, she can still shield them but the ball will hit the location where they once were. Meaning if shes gonna spam nuke your whole team she has to be closer than 1500 range