A more than reasonable Yasuo nerf idea to trim some of his early game power.
Make his Q cooldown scale with rank again.
Way back in 4.21 they gave this buff to Yasuo:
Q - Steel Tempest COOLDOWN 5/4.75/4.5/4.25/4 seconds ⇒ 4 seconds at all ranks
My suggestion: revert this buff and see what happens.
Basically what this buff did is let Yasuo ignore his Q and put all his skill points into his E (his dash). Making his Q cooldown scale with rank again will force Yasuo players to think more about what to max in their various matchups. Regardless of what they choose their early game will be weaker because he'll either Q less frequently or dash less frequently or both while his late-mid to late game (when he's supposed to be strong) will be more or less the same as it is now (barring any laning difficulty a nerf like this may cause).
silence him knock him up eat him I've done it so many times I left them 1-9 by the end of the game