Why is Yasuo still in league of legends?

I don't really get why yasuo hasn't been deleted yet. His kit is just "too" over loaded. Like he basically has 2 passives and 2 abilities on his Q. At least remove the 100% with 2 items passive because that shit is just broken. The shield on his passive is...okay, if that was his only passive. His Q should at least scale of CDR as a nerf to stop yasuo players just focusing one build path that 1 shot's at least everyone. And talking about "overloaded" his ult still has armour penetration. So when you play tank compared with the 100% crit you can't really do anything. Now, don't get me wrong, i'm not complaining about playing against yasuo's. I pretty much ban him in ranked but when i do play against him i can't remember a time when i've fed because i have experience playing him and know how to play against him. But this is because my team can never play against him. If you go into blind pick and don't expect a yasuo mid or top (or adc at my elo xD) then its kinda your fault. I made a bet that whenever i would play blind pick there would be a yasuo and i haven't been proven wrong yet. So, i just played a game with 2 yasuo's. After the game i checked and they both has something crazy like 320k mastery points and our's was 0/11 by the end of the game. Actually my entire team was somehting like 0/5 by the end of the game. But even a fed champion cannot beat him. There was this hecarim game i played where i was something like 16/1 and about to end and i went up against a 0/5 yasuo and i would've died if it weren't for help of my team.

My idea of nerfs: Passive: Shield thingy, but possibly further to walk as levels increase

Q: Still the blade thingy-but scales of CDR instead of attack speed, hurricane thingy pops up every 3rd auto still for ult. BUT when the hurricane is ready the longer you hold it for the longer you are knocked up into the air, kinda lika a janna Q but the range is fixed.

W: Blocks 1 champion projectile but remains and can only block minion/monster projectiles/attacks. Projectiles blocked increases with points put into it with a maximum of 3. This would allow for counters such as cassiopeia who can spam her E to get rid of the wall

E: Approx a 5 second cooldown but. Can be dashed through allied and enemy minions, not monsters or epic monsters. If it kills an enemy minion the cooldown is refunded- this will show the actual skill cap of some players If passed through an ally minion the cooldown is the same

R: Same jump to target but you can only deal damage for how long the person is knocked up mid air, and can be cancelled whilst they are in the air. So if you get Janna Q's and alistar Q'd you stay in the air for as long as they are in the air. There is no bonus armour pen(lethality-like wtf is that anyway?) except on critical strikes ---kept the bonus armour pen because he won't have 100% crit at 2 items-------

Yeah, i know there's alot of people thinking about how to nerf/destroy/obliterate/kill yasuo but these are just a collection of my thoughts prompted by a game i recently played :P