Did they nerf Ekko?

As one of our assassins that offer opponents a wider mix of gameplay options, Ekko has found a slightly weak steady state since Dusk & Dawn's update mid year. We believe he has some room for power, especially in mid where he scales slightly worse, without buffing his Hail of Blades pattern.

• > Q - Timewinder · Mana Cost: 50 / 60 / 70 / 80 / 90 ⇒ 40 / 50 / 60 / 70 / 80
• > Q - Timewinder · Return Damage Ability Power Ratio: 60% ⇒ 70%