As someone who played yasuo, he needs a nerf.

As someone who as also played Yasuo, he needs several large buffs to bring him back into viability. I have played him like once in a bots game, so I am basically a Yasuo main who could beat Faker in lane with him. Needs buffs.

As someone who utterly destroys Yasuo on a regular basis with multiple champs, he has sufficient weaknesses and probably needs a buff more than a nerf at this point.

marksmen itemization and masteries need nerfs. yasuo is a just a symptom of these broken items, as he profits from the same stats.

same goes for tryn.

the real problem is how much crit they can build in a short amount of time, how broken items like phantom dancers are with 12% damage reduction, or rapid fire cannon and shiv stacking.