OH boy will i get hate for this one, but Yas is completely balanced. He no longer can heal off of minions with warlords until he has an actual life steal item, and even then, it's super reduced from what it was, and we don't really see Life steal quint Yas anymore, so his healing is very average until he gets 100% crit and a full lifesteal item.
His windwall has a long CD, and lets not even go into how many bugs it has where ADC's can just auto directly through it.
His passive gets procced with 1 auto. Not that hard to work around AT ALL. If you can't time burst for when his passive is down, that's your problem.
He can only dash to the same thing every so often ( unlike Irelia).
His ult does not do very much damage in all reality, the damage comes from the arm pen he gets for his autos, but his ult also places him in direct danger.
1 stun hes dead. Period.
I had an Annie call me broken the other week playing Yas, but yet not one time did she ever time her Tibbers for when my Passive wasn't up. Not one single time. 1 auto, Tibbers with stun = DEAD. Yet she didn't seem to grasp that concept very well.
Tank Yas no longer exists, it's useless.
I see so much Yas hate, yet every one of the posts always forgets one thing when they complain, that all it takes is 1 stun to beat him. Yas is not OP because you picked a slow immobile no stun champion, hes OP because you automatically fucked yourself by picking a champion he counters! That's like taking a Rock to a Tank fight!