One thing about Master Yi
Summery: (if you don't wish to read all that) Reduce the range of Master Yi, Alpha strike to 400 instead of 600.
Now I get i might get some slack for this since people here like to defend Yi from any kind of nerf since his kit is quite simple and to that i agree except for one spell his alpha strike I think it has to big of a range, it not only makes him untargetable for awhile, allowing him to dodge any form of skillshot, but it also immediately put's him in front of his target even if the champion flashes, or dashes to the other side of the wall, and running is no choose since his ult covers that area pretty well and though i understand he is weak to stuns but so is Fiora who shares a similar move (Her ult does more damage but has a far greater CD) but her why does hers have such a shorter range which is 400 to Yi's 600, now i get Fiora has arguably a better move to close the gaps (Yi's ult to her Q) leaving Yi allot more in the open for stuns but all Yi has to do is buy a Mercurial Scimitar or even just a Quicksilver Sash and they become less of a problem now this is not to say he is OP in any way but the thing about Yi and Fiora is that they are champs that rarely ever see competitive play so this change is not so much for that but for Normal where they see allot more action since its less organized.
But also speaking from experience (I don't play ranked just an FYI just for fun) I just came from a game as Lissandra where my ult not only had a shorter range but mine also had an animation which kept on being interrupted from his q making him appear just beside me making my W useless and since his ult makes the slow from my Q useless I basically only died without being able to do much ( declaimer he did already have Mercurial Scimitar making me already unable to stun him with my ult again even after i was finally able to cast it).
Tell me what you guys think do you agree (which if you do I would be happily surprised) or disagree and think I am a good for nothing normal scrub who will never find love (or just disagree without being rude).
I'm interested to know whats your strategy to face of Yi when your one of these champs tell me how effective MF's or twitch's slow works on him or Zilean if with his hard to hit stun, or how do you even stop him with Soraka I'm interested please tell me how
doesn't make them op
can also kill him in his alpha strike but wonder if Shyvana'a burnout was a bug dosen't sound like it should allow that
is especially fun against him.
all the cc swain has left is a slow which Yi can counter plus his Ult, and if a Yi is experienced vs a swain his ult will make landing your snear a little tricky because of his speed, but i say this for more of champions like 
max rank switcharoo
and full rank W
level 18 669 level 1 550
650 at all ranks
tied at 600 even
Addressing a portion of your argument that he needs it or else they will AA to death, now, I understand that maybe 400 might have been to large of a number though so how about 500 since his ult still leaves him to destroy many adc's some examples would have to be MF, Graves, and Draven that at best, their only cc is a slow, and them having no means of escape from him, and though you do have a point with the other champions, them being Yas and Tryn they themselves are still affected by slows and you can escape them while Yi's ult last a whole 10 seconds making it difficult to get away from even if you try to flash away, since he easily catches you again and even if Vayne does Condemn you can easily catch her again with no real worry (unless she does it to a wall and stun's you), as or Olaf he ain't really an assassin like Yi or Yas he is more a bruiser he doesn't usually do the same amount of damage in the short amount of time Yi does so you can always have a chance to fight back plus lets not forget of how he can easily do true damage insanely fast to an already squishy victim.