Why -5 ms From Kassadin Is a serious nerf and why there is no need to nerf again Kassadin

So here we go again. Second consecutive patch with nerfing and i dont really find a reason for this. I play this champ from S3 and for 2 and a half seasons he was almost unplayable. After this was a champ with 47-48% winrate and this days he is about 52%. I dont find that unballanced and most of players that hating never played this champ. Cause if they did they would see for themselfs that at leveles 1-6 you are practically weak as a creep and post six till the moment you shine you are a bellow average antimage/assasin. The whole project that makes a champ that we love is that he starts weak and he goes to god, but at least 50% of the games we never have our chance. is destroyed in lane from every range AD and every assassin AD, struggles against most early game ap and even bruisers are hard to fight. Really i challenge all people that says kassadin is broken, or imbalanced to try play one game against Quianna, or Zed, or pantheon, or lucian,draven,wukong, yasuo, Talon and many more. Even champions that is acknowledged as easy ,like fizz ,or sydra,lux, need to have deep knowledge of kassadin and LOL to expose their weaknesses. In all this matcups 340 MS+his passive gives him a chance to harass/last hit with q,e and to be viable in early stages of the game. -5 ms will remove part of this, making his early game even more weak and is already the weakest from all champs i think. is a champion that fits to people that have patience. There are losts of things that need to be done to have a better experience, as new server, bug fixes, maybe enhance/renew grafs, reduce lag etc. Thanks everyone and sory, i wrote so many. I thought i would write 3-4 sentences but it took more :)